Steve's comment ending w/ gravity over time is pretty cool because it makes me think that the lowest energy state of a satellite would be a synchronous rotation with its heaviest side towards the larger body.
Hello. By the laws of physics, a body or object in revolution, there must exist a force of energy in order to travel about its orbital path? Yes or No. If your answer is yes, then the same body or object in orbit, as in your second video, its rotation cycle must be of another energy force. Therefore synchronous rotation is questionable. The moon does not have a mind of its own to know how fast or slow to rotate. A hidden secrete of the moon, which many are unable to solve. The answer is simple.
Awwww I got it now. The mood does indeed rotate on its axis, my bad to think otherwise. that tought got me outta nowhere. If you super impose the phases of the moon on top of each other in the xy axis and keep the moon centered on the zero point then it becomes clear that it rotates on its axis. Simplier still, draw the earth and the moon with the same side facing the earth at four main locations (x180,y0 + x-180,y0 + y90,x0 + y-90,x0) degrees. Super impose all the xy coordinates on each other.
Wow. Interesting how difficult this is for people to grasp. Would it help you all to know that EVERY moon of EVERY planet in our solar system exhibits the same behavior (except one!) - rotating at the same speed as it revolves. The sole exception is Saturn's moon Hyperion which has a very strange tumbling rotational behavior. What causes this synchronicity? Gravity over time.
@FivePhases You're half right. One side always does face the earth, but you are wrong about "one side faces the sun". All sides of the moon will face the sun over the moons lunar period.
Try this: Take a grapefruit [earth] and a small orange [moon]. Sharpen a pencil and stab it into the orange. Place the grapefruit in the middleand place the orange so that the eraser end touches the grapefruit.The point of the pencil is now pointing at you. Move it around to the other side of the grapefruit. The point of the pencil is now pointing away from you. Keep moving until the orange and pencil are pointing at you. You will notice the pencil and orange rotated 360 degrees.
@contentina By your logic, the EARTH doesn't rotate as observed from a geosynchronous satellite - because such a satellite sees only the same face of the earth all the time. Also by your logic the earth doesn't rotate as observed from a tall building looking down at the ground because the ground doesn't move (except in earthquake country :-)
They never landed on the moon! they faked the whole thing! wake up world! They faked the whole thing! it was a movie set where they faked the moon landing! They built a movie set on Mars and faked moon landing on it... you sheeple! wake up!
Well it;s kind of like if you tied the end of a thick string to a ball, and spun that ball around you, the side to which the string is fastened to will continue to face you as you whirl the ball around your head.
The moon only rotates depending on your perspective. To say it rotates on its axis is incorrect. Straighten out its path, it does not rotate at all. Its axis is its balancing point relative only to itself and earth's magnetic field. If it rotated once on its axis it would spin 360 degrees per revolution relative to itself and the earth. It doesn't. In the beginning of the video when you said "moon with no rotation", it rotated 360 degrees on its axis. U R CONFUSED.
@zephyrargilopod "Depending on your perspective" is what is getting you in trouble here. If you were out in space watching your conclusion would be different. So perspective may confuse people about what they see, but it doesn't change what is actually happening.
So it is a scientific law that all objects slow down until they reach synchronous rotation? That will explain it, i always thought the statistical chance of this happening must be incredibly small.
If the moon tilts right or left, how can one say it is rotating on its axis, always same side to earth? This is a contradition to the basic laws of physics. If moon tilts to left, it is then rotating in a counter clock-wise rotation. If moon tilts to the right, it is then rotating clock-wise rotation. How can the moon turn in both direction at the same time? The answer is very simple. Observe carefully the moons revolutionary principle about earth. A conception very well hidden, seen by a few
@adonegubert You're kidding right... basic laws of physics maybe, but you are not taking into account the gravitational pull of each object. If the objects were perfect spheres, and had a perfectly even gravitational pull of perfect homogeneous density then there would be no slowdown, but the world is not perfect, and neither is the earth. The reason this happens is because one side of the moon probably had a bigger gravitational pull than the other and thus put friction on the system.
u ask why the same side of the moon face earth. Let me put it this way. Why does an airplane fly with its' nose forward around the earth? Does it have synchronous rotation? To further this explaination, the moon and the airplain are traveling forward in a projectile motion. Anything else, the plane would be flying backwards. So, is the moon really rotating? Yes it is rotating, but not on its axis. Can anyone solve this mistery? The answer lies in a hidden secrete visible to the mind of reasoning
@adonegubert an airplane flies nose forward because of many dynamics, most of which have little to do with whether the moon spins or not. Mostly, its friction and momentum that determine a plane must fly ... forward. Your comment is confusing. I don't think you or anyone else can explain why the moon does NOT rotate on its axis, but it is fun to speculate. Last I knew the very essence of the universe is the action of spinning. Something strange indeed.
@adonegubert an airplane flies nose forward because of many dynamics, most of which have little to do with whether the moon spins or not. Mostly, its friction and momentum that determine a plane must fly ... forward. Your comment is confusing. I don't think you or anyone else can explain why the moon does NOT rotate on its axis, but it is fun to speculate. Last I knew the very essence of the universe is the action of spinning. Something strange indeed.
This video has more to say than meets the eyes of the observer. The moon seems to rotate synchroniously every revolution about earth. Does anyone see what is happening? One must look carefully and observe the entire picture before deriving at a conclusion. With very little effort, I can point out a remarcable fact or a concept that will shatter the true meaning of the word 'revolution' as in orbing. The word revoltion must be redefined to solve this age old phenomena of the synchronious rotation
so many people are confused on this subject, calling the shaded side of the moon "the dark side" is incorrect as the dark side is never seen by Earth, thanks again for posting this and helping clear up the confusion! People should refer to the dark side as the "far side", we should never talk about the "dark side" imo lol
almost all of the black craters are on the side that faces the earth. animation didn't show this cause its not relevant. but the side we don't see is unrecognizable. one theory is that when the moon was much closer, earth's gravity pulled all the iron to one side and formed volcanoes which left the dark lava that scars only our side. another weird thing about the moon is that its way, way huge relative to other planets and their moons. HOW was it formed??!!!!
@40390576 I am chalenging mind, i'm not here to make conflict, just better understanding. Take the third view point of the Earth and Moon in rotation as it is in nature. And now, freeze - stop moons orbit around Earth... What do you see hapening with the moon..?? Does it rotate in its own axis or not..? Be honest to you and answer that question respectfuly to your undestanding.
As i already posted: The Moon is locked in Earth's orbit is -->MOVING/ORBITING<-- AROUND EARTH'S AXIS AND NOT IN IT'S OWN.. And that proofs seeing only one side of the Moon.. QUESTION: what hapens if the moon didn't have movement/orbiting around Earth, what would you see? Moon rorating in it's axis? It would be Stationary in every apect. And that is Stationary-geoorbital movement. You wont find it because the regular science doesn't know it.. yet hehehe ;)
@40390576 The Moon is locked in Earth's orbit and is rotating AROUND EART AND NOT IN IT'S AXIS.. And that is the diference... Now, what hapens when the moon didn't have movement around earth, what vould you see? Moon rorating in it's axis?? I hope that clears it :)
@40390576: I dont' mean geostationary and i know what it means... If you don't know the term that doesn't proof that it doesen't exist.. Tell me, where is the diference betwen rotating and moving in curve or in orbit? Ewerithing depends on the wievpoint and is relative, do you agree? Now tell me from earth view perspective, does Moon have a rotation? And that is my example wit the car. And now the question: Where does rotation end and curving begins??
thanks for the wonderful explanation and video illustration... this was a mystery for me since my childhood, until I watched your explanation.. thank you so much !!
Who claims the moon rotated on its own axis, have not understood the very definition of rotation. This is very widespread misinformation! Think again!
This is the same as I would claim that my ass was rotating around my butthole because it always faces the same side to the middle point of the earth! You really should think that through !
could it have something to do with the moon's distribution of mass? If one side of the moon has much more mass than the other, then perhaps that's the side that will tend to face the earth over time.
Ok: Sescription for little children: Orbit and rotation are two diferent wiev points and are not the same thing. It is like a car driving in the circle oround you (Orbit) You see only one side of the car. If the moon realy had rotation in its axis, what happens with the car? This is known als stationari-geoorbital movement.
If you want to help children learn over the internet you should probably learn how to not type like a retarded ape is jumping up and down on your keyboard.
@TheFounderUtopia : Če bi ti vedel kaj ti jaz zdaj pišem, bi se res počutil kot opica... Ampak ker si sodnik po platnicah ste retardiranci še vedno retardiranci čeprav vam nič žalega nočem, pišem kaj mislim in to kaj mislim je moja resnica... Translate if you can and then make judgements of people you don't know.. And if i'm realy retarded it is ok by me, because in this moment i'm feeling prety good... :)
Your spelling and sentence structure is just as terrible in Slovenian as it is in English. I didn't make a judgement of you (by your cover or otherwise), nor did calling me retarded (which you misspelled btw) hurt me. However the fact that you can't read OR construct a simple sentence does suggest that you might just be retarded yourself.
Oh, and by the way. Если ты думаешь, зная, как говорят на более чем одном языке автоматически заставляет тебя умный, то ты еще больше идиот.
@TheFounderUtopia Still, what's your point? What do you have to say to me?? That you'r perfect, or what??? You are so smart and bright, you are simply the best... ok?? Leave those retarded monkeys alone to share their thinking and posting in any language their desire.. OK? I already know i'm not perfect... And yes, my opinion is: Your are a SMART-AS!
Can I add the orbit of the moon will always increase meaning one day, thousands of years into the earth future, the moon will look around 8 X smaller as it will be further away from our planet. It will happen and I doubt the human race will ever see it...
This is very wrong, scientists have proven the moon has an elliptical orbit of our planet, which means when it is closer to us, it causes more earthquakes on our planets surface. So far everything I have seen on here, shows the planet going round in a circle. This does not happen people. Your orbits wrong, this is so so wrong...
Okay, I need to ask a question for a book I'm writing. Let's assume the Earth is a star, and the moon a planet. Even though the planet has synchronous rotation, does the amount of light received and the position of the star ever change?
@TheOlderangel If you take the trouble to learn a little about astronomy you will find that you don't need to be so paranoid. Understanding is a great thing!
@finlarg I'll take your superb advice my friend. Paranoid? Nah!!! But maybe you can get NASA to explain these shots and oh,please do get back to me with the up and up old chap
@TheOlderangel I can't speak for NASA, but I think the most likely explanation for the objects in that video are either satellites or space debris in low earth orbit. If they were further away they'd have to be MASSIVE, the size of asteroids. We would certainly know about anything that size so close to earth!
@finlarg would we? earth obit? satellites? for what? Come on spaceman? Time to kick off the nap blankie and have a shot of reality. So tell me what was in the cargo bay of Atlantis st-135? besides a year's worth of food for our russian friends? what's in Leo quadrant from south pole orbital? Darkness is the abscence of light my friend. peace
@finlarg I think they're ships and they're in/on the moon and they are HUGE. The shuttle mission has a freaky new satellite that will hover around the south pole. Look up John Gorman's YT channel and check out his last 2 video's. They are building some crazy apparatus down there. These last three missions have something to do with Elenin or whatever is coming from the direction of Leo constellation and from the south See also Red/Blue KachinaHopi prophecy. Very interesting stuff NASA is silent.
Well there are not alien bases on the moon even though I agree in the universe there is intelligent life but it could never find us due to the vast distances and the fact the universe looks the same from whichever angle you look so it is very hard to navigate long distances
I believe we are being monitored by an alien race and they have influenced the rotation of the moon....who knows whats the the dark side. There a many photos and such that show abandon bases and structures on the moon.
How come every Apollo Astronaut that went to the moon believes in Aliens and don't deny it?
The Moon is a Alien Station!
Think about it... Trillions of galaxies with trillions of stars...... its only mathematical certainty that intelligent life exists!
@MrTr0llol Actually yes, they do. *gives back science book*
If two objects of the same mass get very close, they eventually become tidally locked, like Pluto and Charon. Now if you have two objects of significantly different mass, the one with the smaller mass gets tidally locked to the object with higher mass.
Gravity gets stonger the closer you are to the center of the gravity well.
@jsomerville85 Thanks! So by what your saying, it would be fair to say that the moon is similar to a tetherball spinning around a central pole (earth) and that the tidal lock is like an invisible tetherball rope, right? The tetherball would only ever show one side of itself to the central pole, right? So my question is: how can we say that the moon is spinning on its own axis but say that a tetherball is spinning on the central axis?
the moon could not have got to its current position from a collision with another large body in our solar system, but would have had to have been placed in orbit already locked into the full gravitational pull of the earth to share the same axis point. the moon is a large satellite that would have been on the earths surface at one time. AND NO THE MOON DOSE NOT HAVE ANY MOTION OF ITS OWN
I appreciate the video, but by this logic, a tetherball also rotates on its axis as it goes around the pole. If I were standing on the tetherball pole, I'd only see one side of the tetherball, but that's because the ball is rotating on the pole's axis, not it's own. The tidal lock can be likened to the rope. I've begged professors to explain how this is not the case, and none yet has. If you can explain, please let me know.
@thekidscallmeBlue The Moon takes 27.3 days to turn once on its axis. But the Moon also takes 27.3 days to complete one orbit around the Earth. The Moon’s rotation time is exactly the same amount of time it takes to complete an orbit, it always presents the same face to the Earth.
@thekidscallmeBlue@thekidscallmeBlue Because it only presents one face, astronomers say that the Moon is tidally locked to the Earth. Although the Moon looks like a perfectly smooth ball, it has slight differences in the shape of its gravity field. A long time ago, the Moon did rotate. But each time it turned, the Earth’s gravity tugged at it, slowing down its rotation until it only presented one face to the Earth. At that point, the Moon was tidally locked.
@thekidscallmeBlue Many other moons in the Solar System are also tidally locked to their planet. In fact, most of Jupiter’s large moons are tidally locked.
We do, however, see 60 % of the moon because of "Gravitational entanglement between center of the Moon's mass and center of the Earth's mass causes that Moon only librate" But good video, clean explanation.
You already have a 0:1 moon in your video, as well as our moon's 1:1, which is the final state of all despun bodies. To complete your CW set, make the 2nd 1:1 spin rate for a retrograde body spinning down:
At 12 oclock, the moon points up;
At 9 oclock, the moon points to the center;
At 6 oclock, the moon points down;
At 3 oclock, the moon points to the center;
Finally, back at 12 oclock, the moon points up again.
In astronomy "-" (minus) signs are used to denote retrograde CW orbits or rotations, and "+" for regular CCW orbits and rotations. As seen from the center-point perspective, our moon would have spun down in one of the two directions ("~" is for eternity since we don't know how many spins our moon originally had, but only the last few spins are relevant to the discussion). CENTER-POINT PERSPECTIVE: ~-5 -4 -3 -2 -1 -0 ~^~ +0 +1 +2 +3 +4~ The final "0" spin in astronomy would be: 1:1
Your first moon with so-called "zero rotation" is in fact spinning clockwise 360° as it orbits 360° in the opposite direction. These two 360° circular motions in opposite directions merely cancel each other out from the sidereal perspective. From the center perspective, that moon is clearly spinning..
The 2nd so-called 1-rotation moon is NOT spinning from the center perspective.
The last moon is spinning 7 times from the center perspective, and 8 times from the sidereal perspective.
The earth's crust at the Marianas Trench has been pulled outward, and evidence of the tearing of the crust and "folding back " of the crust can be seen is northern South America. The back side of the moon is rippled to the halfway point of expulsion and relatively smooth, while the side we see is rough and made of different materials. The moon, if expelled from the earth, would have a breakthrough point and an escape point. There is a central "navel" visible on both front and back of the moon.
So the speed of earth's rotation about its axis is slowing down because of the force of gravity caused by the sun? I didn't know that. What's the rate?
I always found syncronous rotation difficult to visualize. Because if the Moon spins, how could it always have a same face toward us and remain in orbit. This video helps a little to understand it better, but I suppose a lazy susan model might be better?
I am working on an animation of the solarsystem and am currently stumped when I've got to triton, a moon on neptune. It orbits in the oposite direction to neptunes rotation, I am happy with that however it is said to have a Synchronous Rotation. Does this mean one face of triton is always facing neptune (and therefore spinning the opposite direction as neptune). People have told me Synchronous Rotation always implies it is spinning the same direction as the planet rotation......
An excellent illustration. Now I understood why we see only one(same) side of the moon although I was trying hard to understand this for last 25 years ! Nevertheless I am happy today.
I never knew that? That the moon doesn't rotate on it's axis. I always thought that as it rotates you would see a different face if you were in Russia or Saudi Arabia
This comment has received too many negative votesshow
Moon doesn't rotate at all!
Center of mass of the Moon is closer to the side we see. Gravitational entanglement between center of the Moon's mass and center of the Earth's mass causes that Moon only librate, but not rotate.
Such shifted center of the Moon's mass is due to collision with the Earth in the past..
If one day Moon begins to rotate, we will be in big trouble - massive earthquakes all over the world. Not to mention volcanic activity, tidal anomaly and other nasty stuff.
@CrazyScience If the Moon did not rotate at all, then the same side would not always face us, which it does. The Moon is tidally locked to the Earth, meaning it's period of rotation is the same as it's period of revolution. This is a very stable configuration.
Yes, it appear that rotate. Exactly as ball attached to rope and if you rotate it around your head - attached point on that ball will be always oriented toward you. But, ball itself appear to has synchronous rotation with exact period... And you will feel steady pull if rotation is at constant speed.
"Tidally locked" or gravitational entanglement. Sounds similar, but different words. My point is that moon once may begin to rotate freely, and that will spell disaster.
@astrogirlwest YOU ARE WRONG! THE FRONT SIDE OF THE MOON HAS MAGNETIC DEPOSITS REF: NATIONAL GEOGRAPHIC 1973. THE MAGNETIC ATTRACTION KEEPS THE "FACE" POINTED
@CrazyScience I also believe that the moon hit the earth in the past. There are many obvious reasons to believe this theory over the official theory of a mars sized object striking the earth and creating the moon. The side we see is the side that hit the earth. I believe that the moon may have been covered with ice before the impact. Impacting the molten earth the ice was stripped from the moon, this created all of the oceans. The actual point of impact creating the pacific. I have more
I think that water already existed in time when moon hit the Earth. Also, perhaps primitive form of life existed. One day scientist may found fossil traces on the surface of the moon. What is water actually? Hydrogen and oxygen. Such atoms are everywhere in the universe, it is matter of time when it will bond and reach the Earth's atmosphere. The rest is history. And, water exist on the moon, but in ice form beneath the surface.
@CrazyScience They say the earth was completely covered with molten rock and volcanoes and that water was brought by comets, this I do not believe. But I firmly believe the moon did hit the earth creating Mariana Trench at the impact, and creating the North Atlantic Ridge on the opposite side of earth splitting the continents. The dark craters on the moon are result of impact with earth. We would know for sure if we could get some real moon rocks, not the fakes from fake moon landings.
@CrazyScience It is good to finally find someone who agrees that the moon did hit the earth. I have tried to present this theory to other scientist and they totally try to discredit this theory. I myself am not a scientist, but I can see the obvious. I to believe there was some life present on earth at the time of this collision. Could it be possible that the atmosphere was created when ice and fire and volcanic gases mix. No other known planet has water like earths water.
"I have tried to present this theory to other scientist and they totally try to discredit this theory."
If a theory (actually, you mean "hypothesis") is implausible or lacks any supporting evidence, it's valid to dismiss it until supporting data is presented. Cut out the persecution complex.
"I myself am not a scientist, but I can see the obvious."
You may find that reality is sometimes counter-intuitive. There was a time when it was "obvious" that the Earth is flat.
Changing the subject somewhat - the earth/moon system rotates about their CofG once per moon orbit - correct? If the earth and the moon had the same mass they would rotate about a point mid-way between them, as it is the CofG is about 1/4 way into the earth. Does this mean that this system CofG follows an ellipse around the sun and the earths centre does a sort of wobble along that ellipse?
my jerk friends argued with me about this tonight, your video proved them wrong. thank you for making them shut up.. yes the moon spins.. yes we spin.. and yes we see the same side of the moon.. you'd be suprised how oblivious people are of whats right over there heads!
This is just a way of twisting perception! The 1st demostration is a moon without rotation reletive to the Sun not the Earth. The so called,"slow rotation", is actually a fix position orbiting EARTH. Anyone can grab a ball a spin themselves and see only one side at all time,the ball never rotates in your hand. Why the BS physics?
@wiseyeffect Actually in the first case the Moon has no rotation around its own axis with respect to the background stars. In the other cases the Moon does have rotation around its own axis with respect to the background stars. I'm not sure if this answers your question, but the two cases are definitely different. No BS physics necessary.
@wiseyeffect I am really not sure what you are asking here. In the first case that I show in the video your statement is essentially what I am illustrating and what I have said - "Moon without any rotation...". However this first case is not a "correct" case in the sense that this is not what really happens.
The Moon DOES rotate on its own axis with respect to the background stars while also revolving around the Earth. The key is that these two motions occur at the same rate.
@wiseyeffect That depends on the satellite. The ISS and space telescopes have thrusters and can actually control their direction and maneuver in space so they are have more complicated motion.
Any object that orbits another body without any additional thrust will eventually become "tidally locked" like the Moon is to the Earth. Even the Earth's rate of rotation (day) is slowing to match the rate of revolution around the sun (year) - though this will take billions of years!
@astrogirlwest how is it that the moon being such a large body to the Earth every became locked with Earth? It would seem all the near by planet to the Sun would of lock long before the moon would with the Earth.
@wiseyeffect It is true that the Sun is much larger, but the Moon is MUCH closer and distance makes a huge difference (the gravitational effect increases proportional to the mass, but decreases as one over the distance *squared*). You can see this also by the gravitational influence the Moon has a over the Earth's tides - the Moon has a much larger effect on tides than does the Sun.
But Mercury is tidally locked to the Sun. And most moons of other planets are locked to their parent planet.
This has always been somehow out of my ability to visualize. Thank you so much for this. Now when I look at the moon in its phases, it will make sense to me.
What are the chances of this naturally occurring? Obviously greater than zero but seriously? As the moon moves further away with each orbit will we eventually see the other side and was the other side once viewable when the moon was closer?
@owensaruba Synchronous orbits are very common. Many objects in our solar system are synchronous with their parent bodies. It is a natural, stable orbit.
@owensaruba Your other questions are good ones, and I don't know the precise answer, but I would think that the stability of the orbit (and the synchronicity) would be maintained as the Earth-Moon distance increased as this is a gradual process. Also the Earth's orbit is slowing as a consequence and so eventually it will be in a resonance with the Sun-Earth-Moon System.
As to whether Earth ever saw the other side of the Moon? I would say yes, but in a time before humans were on the planet.
I've been telling people this for years, that is the reason why we always see the same side of the moon during a full moon, but rarely does anyone believe me. Thanks for the video, summed it up very nicely.
i just finished my 8th grade school year and our 4th qtr.subject was astronomy. we went over this material in clss..(Why we always see one side of the moon.) And during the school year while we were studying it, i could never understand why. the explination was that the moon rotates on its axis as the same speed as earth does..something like that..but only now, halfway into my summer break, i finally understand! ^^i also won the science award because i was my teachers fav.&exceptional student!
Great Job ! It's kinda Ironic that the ancients seen only the same side of the moon as we do? I believe it was only after the Apollo 8 mission that mankind 'seen' the other side of the moon. Again, Great Job AstroGirlWest on delivering a concept that I think most people do not realize, and a great fun-fact ! There's a whole lot more to our moon (I believe our moon's name is Luna) than most people realize !
A satellite in a synchronous orbit that is both equatorial and circular will appear to be suspended motionless above a point on the orbited planet's equator............
Your demonstration doesn't explain why the moon's rotational period and it's orbital period are so nearly identical.
The moon's mass distribution is not perfectly uniform. Tidal friction (much like what occurs on earth but much more subtle, since the moon is essentially a solid body) has caused its rotation with respect to the earth to stop. Think of an out of balance wheel that is allowed to spin freely. Eventually the wheel will come to a stop with the heavier side down.
Your demonstration doesn't explain why the moon's rotational period and it's orbital period are so nearly identical.
The moon's mass distribution is not perfectly uniform. Tidal friction (much like what occurs on earth but much more subtle, since the moon is essentially a solid body) has caused its rotation with respect to the earth to stop. Think of an out of balance wheel that is allowed to spin freely. Eventually the wheel will come to a stop with the heavier side down.
Your demonstration doesn't explain why the moon's rotational period and it's orbital period are so nearly identical.
The moon's mass distribution is not perfectly uniform. Tidal friction (much like what occurs on earth but much more subtle, since the moon is essentially a solid body) has caused its rotation with respect to the earth to stop. Think of an out of balance wheel that is allowed to spin freely. Eventually the wheel will come to a stop with the heavier side down.
this didn't actually explain why
rg0057 1 week ago
Comment removed
Hosehead46 1 week ago
Steve's comment ending w/ gravity over time is pretty cool because it makes me think that the lowest energy state of a satellite would be a synchronous rotation with its heaviest side towards the larger body.
Antipastry 2 weeks ago
Hello. By the laws of physics, a body or object in revolution, there must exist a force of energy in order to travel about its orbital path? Yes or No. If your answer is yes, then the same body or object in orbit, as in your second video, its rotation cycle must be of another energy force. Therefore synchronous rotation is questionable. The moon does not have a mind of its own to know how fast or slow to rotate. A hidden secrete of the moon, which many are unable to solve. The answer is simple.
adonegubert 3 weeks ago
@adonegubert
Of course Moon doesn't have to be intelligent to achieve synchronous rotation, but the latter is not really a mystery.
That's a tidal effect, just like what has happened to some of the other moons in our solar system.
silveren777 2 weeks ago
Why has'nt any radio telescopes been able to view the "dark side" then.
currawongee1 3 weeks ago
Awwww I got it now. The mood does indeed rotate on its axis, my bad to think otherwise. that tought got me outta nowhere. If you super impose the phases of the moon on top of each other in the xy axis and keep the moon centered on the zero point then it becomes clear that it rotates on its axis. Simplier still, draw the earth and the moon with the same side facing the earth at four main locations (x180,y0 + x-180,y0 + y90,x0 + y-90,x0) degrees. Super impose all the xy coordinates on each other.
FivePhases 3 weeks ago
Wow. Interesting how difficult this is for people to grasp. Would it help you all to know that EVERY moon of EVERY planet in our solar system exhibits the same behavior (except one!) - rotating at the same speed as it revolves. The sole exception is Saturn's moon Hyperion which has a very strange tumbling rotational behavior. What causes this synchronicity? Gravity over time.
StevenTheAmusing 3 weeks ago
Contentina is right btw. The moon dooesnt rotate on its axis as suggested by ur model. The same side of the moon always face the sun and the earth.
FivePhases 4 weeks ago
@FivePhases You're half right. One side always does face the earth, but you are wrong about "one side faces the sun". All sides of the moon will face the sun over the moons lunar period.
StevenTheAmusing 3 weeks ago
I guess it is possible that people can't globally agree on what "rotating on it's axis" means... hehheh
Cool vid though. Thanks.
contentina 1 month ago
@contentina
Try this: Take a grapefruit [earth] and a small orange [moon]. Sharpen a pencil and stab it into the orange. Place the grapefruit in the middleand place the orange so that the eraser end touches the grapefruit.The point of the pencil is now pointing at you. Move it around to the other side of the grapefruit. The point of the pencil is now pointing away from you. Keep moving until the orange and pencil are pointing at you. You will notice the pencil and orange rotated 360 degrees.
Hosehead46 1 week ago
Its funny,, to me this model confirms that it is not rotating on its axis, lol.
As I see it, the first sample you call "without" rotation actually shows one 360 degrees per cycle axis rotation.
In my view, if a body at any point rotated 360 degrees on it's axis, that means that at some point we would see it's "other" side.
Regardless of where we are observing it from...
Maybe if you were to consider Earth's rotation and gravitational center between Earth and Moon you would get a clearer r
contentina 1 month ago
@contentina By your logic, the EARTH doesn't rotate as observed from a geosynchronous satellite - because such a satellite sees only the same face of the earth all the time. Also by your logic the earth doesn't rotate as observed from a tall building looking down at the ground because the ground doesn't move (except in earthquake country :-)
StevenTheAmusing 3 weeks ago
There's life on the other side.
rocabear 1 month ago
They never landed on the moon! they faked the whole thing! wake up world! They faked the whole thing! it was a movie set where they faked the moon landing! They built a movie set on Mars and faked moon landing on it... you sheeple! wake up!
YoLninYo 1 month ago
Well it;s kind of like if you tied the end of a thick string to a ball, and spun that ball around you, the side to which the string is fastened to will continue to face you as you whirl the ball around your head.
OLDTIMER1969 1 month ago
The moon only rotates depending on your perspective. To say it rotates on its axis is incorrect. Straighten out its path, it does not rotate at all. Its axis is its balancing point relative only to itself and earth's magnetic field. If it rotated once on its axis it would spin 360 degrees per revolution relative to itself and the earth. It doesn't. In the beginning of the video when you said "moon with no rotation", it rotated 360 degrees on its axis. U R CONFUSED.
zephyrargilopod 1 month ago
@zephyrargilopod "Depending on your perspective" is what is getting you in trouble here. If you were out in space watching your conclusion would be different. So perspective may confuse people about what they see, but it doesn't change what is actually happening.
StevenTheAmusing 3 weeks ago
The moon is such a troll
nevred 1 month ago
Comment removed
dweller333 1 month ago
So it is a scientific law that all objects slow down until they reach synchronous rotation? That will explain it, i always thought the statistical chance of this happening must be incredibly small.
ceclovitch 1 month ago
Thanks for this; I finally get it!
tbalsillie 1 month ago
I've never seen the red side of the moon...
ItsJoshNorman 1 month ago
MrSenorD. Look carefully before deriving to a conclusion. Try again.
adonegubert 2 months ago
If the moon tilts right or left, how can one say it is rotating on its axis, always same side to earth? This is a contradition to the basic laws of physics. If moon tilts to left, it is then rotating in a counter clock-wise rotation. If moon tilts to the right, it is then rotating clock-wise rotation. How can the moon turn in both direction at the same time? The answer is very simple. Observe carefully the moons revolutionary principle about earth. A conception very well hidden, seen by a few
adonegubert 2 months ago
@adonegubert You're kidding right... basic laws of physics maybe, but you are not taking into account the gravitational pull of each object. If the objects were perfect spheres, and had a perfectly even gravitational pull of perfect homogeneous density then there would be no slowdown, but the world is not perfect, and neither is the earth. The reason this happens is because one side of the moon probably had a bigger gravitational pull than the other and thus put friction on the system.
MrSenorD 2 months ago
The moon does tilt though right? I film it often and watch others videos, the angles are always different
MrDeamon1 2 months ago
u ask why the same side of the moon face earth. Let me put it this way. Why does an airplane fly with its' nose forward around the earth? Does it have synchronous rotation? To further this explaination, the moon and the airplain are traveling forward in a projectile motion. Anything else, the plane would be flying backwards. So, is the moon really rotating? Yes it is rotating, but not on its axis. Can anyone solve this mistery? The answer lies in a hidden secrete visible to the mind of reasoning
adonegubert 3 months ago
@adonegubert an airplane flies nose forward because of many dynamics, most of which have little to do with whether the moon spins or not. Mostly, its friction and momentum that determine a plane must fly ... forward. Your comment is confusing. I don't think you or anyone else can explain why the moon does NOT rotate on its axis, but it is fun to speculate. Last I knew the very essence of the universe is the action of spinning. Something strange indeed.
zephyrargilopod 1 month ago
This has been flagged as spam show
@adonegubert an airplane flies nose forward because of many dynamics, most of which have little to do with whether the moon spins or not. Mostly, its friction and momentum that determine a plane must fly ... forward. Your comment is confusing. I don't think you or anyone else can explain why the moon does NOT rotate on its axis, but it is fun to speculate. Last I knew the very essence of the universe is the action of spinning. Something strange indeed.
zephyrargilopod 1 month ago
This video has more to say than meets the eyes of the observer. The moon seems to rotate synchroniously every revolution about earth. Does anyone see what is happening? One must look carefully and observe the entire picture before deriving at a conclusion. With very little effort, I can point out a remarcable fact or a concept that will shatter the true meaning of the word 'revolution' as in orbing. The word revoltion must be redefined to solve this age old phenomena of the synchronious rotation
adonegubert 3 months ago
so many people are confused on this subject, calling the shaded side of the moon "the dark side" is incorrect as the dark side is never seen by Earth, thanks again for posting this and helping clear up the confusion! People should refer to the dark side as the "far side", we should never talk about the "dark side" imo lol
saskatoonscanner 3 months ago
Amanzingly explanation!
andyskateboarder 3 months ago
just to point out one thing...
almost all of the black craters are on the side that faces the earth. animation didn't show this cause its not relevant. but the side we don't see is unrecognizable. one theory is that when the moon was much closer, earth's gravity pulled all the iron to one side and formed volcanoes which left the dark lava that scars only our side. another weird thing about the moon is that its way, way huge relative to other planets and their moons. HOW was it formed??!!!!
tahirthebad 3 months ago
Thank you! This video is awesome
timeaftertime14 3 months ago
Want to keep watching the CORRECT ROTATION, to understand 1:46
StatuesBleedingGreen 3 months ago
NOW i get it :P
wreyoG 4 months ago
@40390576 Or better ewen... Stop the car from my example!!! What happens with it, does it rotate or not? ;)
Geronemoable 4 months ago
@40390576 I am chalenging mind, i'm not here to make conflict, just better understanding. Take the third view point of the Earth and Moon in rotation as it is in nature. And now, freeze - stop moons orbit around Earth... What do you see hapening with the moon..?? Does it rotate in its own axis or not..? Be honest to you and answer that question respectfuly to your undestanding.
Geronemoable 4 months ago
As i already posted: The Moon is locked in Earth's orbit is -->MOVING/ORBITING<-- AROUND EARTH'S AXIS AND NOT IN IT'S OWN.. And that proofs seeing only one side of the Moon.. QUESTION: what hapens if the moon didn't have movement/orbiting around Earth, what would you see? Moon rorating in it's axis? It would be Stationary in every apect. And that is Stationary-geoorbital movement. You wont find it because the regular science doesn't know it.. yet hehehe ;)
Geronemoable 4 months ago
@40390576
Thanks :)
Additionally, if a tidally locked planet had a large enough moon, would this exert a force enough to make it rotate?
blasterchief123 4 months ago
@40390576 The Moon is locked in Earth's orbit and is rotating AROUND EART AND NOT IN IT'S AXIS.. And that is the diference... Now, what hapens when the moon didn't have movement around earth, what vould you see? Moon rorating in it's axis?? I hope that clears it :)
Geronemoable 4 months ago
@40390576: I dont' mean geostationary and i know what it means... If you don't know the term that doesn't proof that it doesen't exist.. Tell me, where is the diference betwen rotating and moving in curve or in orbit? Ewerithing depends on the wievpoint and is relative, do you agree? Now tell me from earth view perspective, does Moon have a rotation? And that is my example wit the car. And now the question: Where does rotation end and curving begins??
Geronemoable 4 months ago
thanks for the wonderful explanation and video illustration... this was a mystery for me since my childhood, until I watched your explanation.. thank you so much !!
appasongs 5 months ago
thankyou i was looking for a good explanation of that ! nice video :) how did the moon came into synchornisation like this?
Dathinkingman 5 months ago
Who claims the moon rotated on its own axis, have not understood the very definition of rotation. This is very widespread misinformation! Think again!
This is the same as I would claim that my ass was rotating around my butthole because it always faces the same side to the middle point of the earth! You really should think that through !
incredibert 5 months ago
could it have something to do with the moon's distribution of mass? If one side of the moon has much more mass than the other, then perhaps that's the side that will tend to face the earth over time.
rhoadess 5 months ago
i love the moon
theflamecommenter 5 months ago
perfect thanks
sooraj1979tk 5 months ago
Ok: Sescription for little children: Orbit and rotation are two diferent wiev points and are not the same thing. It is like a car driving in the circle oround you (Orbit) You see only one side of the car. If the moon realy had rotation in its axis, what happens with the car? This is known als stationari-geoorbital movement.
Geronemoable 5 months ago
@Geronemoable
If you want to help children learn over the internet you should probably learn how to not type like a retarded ape is jumping up and down on your keyboard.
TheFounderUtopia 5 months ago
@TheFounderUtopia : Če bi ti vedel kaj ti jaz zdaj pišem, bi se res počutil kot opica... Ampak ker si sodnik po platnicah ste retardiranci še vedno retardiranci čeprav vam nič žalega nočem, pišem kaj mislim in to kaj mislim je moja resnica... Translate if you can and then make judgements of people you don't know.. And if i'm realy retarded it is ok by me, because in this moment i'm feeling prety good... :)
Geronemoable 5 months ago
@Geronemoable
Your spelling and sentence structure is just as terrible in Slovenian as it is in English. I didn't make a judgement of you (by your cover or otherwise), nor did calling me retarded (which you misspelled btw) hurt me. However the fact that you can't read OR construct a simple sentence does suggest that you might just be retarded yourself.
Oh, and by the way. Если ты думаешь, зная, как говорят на более чем одном языке автоматически заставляет тебя умный, то ты еще больше идиот.
TheFounderUtopia 5 months ago
@TheFounderUtopia Still, what's your point? What do you have to say to me?? That you'r perfect, or what??? You are so smart and bright, you are simply the best... ok?? Leave those retarded monkeys alone to share their thinking and posting in any language their desire.. OK? I already know i'm not perfect... And yes, my opinion is: Your are a SMART-AS!
Geronemoable 5 months ago
@Geronemoable
*ass
TheFounderUtopia 5 months ago
@TheFounderUtopia Hehehehe.... i know but i still Love you as brother... :)
Geronemoable 5 months ago
awesome how God made it so perfectly :)
wj5mjk 5 months ago
Can I add the orbit of the moon will always increase meaning one day, thousands of years into the earth future, the moon will look around 8 X smaller as it will be further away from our planet. It will happen and I doubt the human race will ever see it...
ajhomryder 6 months ago
This has been flagged as spam show
This is very wrong, scientists have proven the moon has an elliptical orbit of our planet, which means when it is closer to us, it causes more earthquakes on our planets surface. So far everything I have seen on here, shows the planet going round in a circle. This does not happen people. Your orbits wrong, this is so so wrong...
ajhomryder 6 months ago
Okay, I need to ask a question for a book I'm writing. Let's assume the Earth is a star, and the moon a planet. Even though the planet has synchronous rotation, does the amount of light received and the position of the star ever change?
blasterchief123 6 months ago
Thanks :) Love your vids!
HeyRuka 6 months ago
I don't trust any of this. They lie about so much. Thanks for proving their explanation,however.
TheOlderangel 6 months ago
@TheOlderangel If you take the trouble to learn a little about astronomy you will find that you don't need to be so paranoid. Understanding is a great thing!
finlarg 6 months ago
@finlarg I'll take your superb advice my friend. Paranoid? Nah!!! But maybe you can get NASA to explain these shots and oh,please do get back to me with the up and up old chap
.youtube.com/watch?v=Hh78FpOMTFQ
TheOlderangel 6 months ago
@TheOlderangel I can't speak for NASA, but I think the most likely explanation for the objects in that video are either satellites or space debris in low earth orbit. If they were further away they'd have to be MASSIVE, the size of asteroids. We would certainly know about anything that size so close to earth!
finlarg 6 months ago
@finlarg would we? earth obit? satellites? for what? Come on spaceman? Time to kick off the nap blankie and have a shot of reality. So tell me what was in the cargo bay of Atlantis st-135? besides a year's worth of food for our russian friends? what's in Leo quadrant from south pole orbital? Darkness is the abscence of light my friend. peace
TheOlderangel 6 months ago
@TheOlderangel A shot of reality? What do you think those objects are? How far away do you think they are?
The cargo of STS 135? I don't know, off the top of my head. As for the second question, I have no idea what you're referring to.
finlarg 6 months ago
@finlarg I think they're ships and they're in/on the moon and they are HUGE. The shuttle mission has a freaky new satellite that will hover around the south pole. Look up John Gorman's YT channel and check out his last 2 video's. They are building some crazy apparatus down there. These last three missions have something to do with Elenin or whatever is coming from the direction of Leo constellation and from the south See also Red/Blue KachinaHopi prophecy. Very interesting stuff NASA is silent.
TheOlderangel 6 months ago
@finlarg youtube.com/watch?v=9Q0e3RqpJ28
TheOlderangel 6 months ago
@TheOlderangel Thanks, I'll watch this when I get home from work.
finlarg 6 months ago
Very good animation indeed..great labels and explanation
Mortimer123 6 months ago
This actually cleared up a lot of confusion. Thanks.
RinnyRin69 7 months ago
Well there are not alien bases on the moon even though I agree in the universe there is intelligent life but it could never find us due to the vast distances and the fact the universe looks the same from whichever angle you look so it is very hard to navigate long distances
SuperFoosballShots 7 months ago
Whenever people tried to explain me this, I never understood it. Not even when I was reading about it. But this has helped me figure it out. Thanks!
electra7lfa 7 months ago
Very Good Video!
MrTr0llol 7 months ago
I believe we are being monitored by an alien race and they have influenced the rotation of the moon....who knows whats the the dark side. There a many photos and such that show abandon bases and structures on the moon.
How come every Apollo Astronaut that went to the moon believes in Aliens and don't deny it?
The Moon is a Alien Station!
Think about it... Trillions of galaxies with trillions of stars...... its only mathematical certainty that intelligent life exists!
MrTr0llol 7 months ago
@MrTr0llol *gives you a tinfoil hat*
The moon is tidally locked to Earth, because it's so close, and by comparision, so light.
Helge129 6 months ago
@Helge129 that doesn't make any fucking sense.
distance and size doesn't matter.
*gives you science book*
MrTr0llol 6 months ago
@MrTr0llol Actually yes, they do. *gives back science book*
If two objects of the same mass get very close, they eventually become tidally locked, like Pluto and Charon. Now if you have two objects of significantly different mass, the one with the smaller mass gets tidally locked to the object with higher mass.
Gravity gets stonger the closer you are to the center of the gravity well.
Helge129 6 months ago
Now put a face seeming like you really understood this and switch to anoter Justin Beaver or Selena Gomez or Lady Gaga or Katty Perry video...
rottencranberry 7 months ago
This was always confusing but I think I get it now.
sarkerm2 7 months ago
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namlee 7 months ago
Comment removed
namlee 7 months ago
good clear explanation, a picture is worth a ...
symewinston 7 months ago
@jsomerville85 Thanks! So by what your saying, it would be fair to say that the moon is similar to a tetherball spinning around a central pole (earth) and that the tidal lock is like an invisible tetherball rope, right? The tetherball would only ever show one side of itself to the central pole, right? So my question is: how can we say that the moon is spinning on its own axis but say that a tetherball is spinning on the central axis?
thekidscallmeBlue 7 months ago
nice video i was unable to imagine that in my mind thanks....
vik2056 7 months ago
the moon could not have got to its current position from a collision with another large body in our solar system, but would have had to have been placed in orbit already locked into the full gravitational pull of the earth to share the same axis point. the moon is a large satellite that would have been on the earths surface at one time. AND NO THE MOON DOSE NOT HAVE ANY MOTION OF ITS OWN
parrhesiastes2012 8 months ago
I appreciate the video, but by this logic, a tetherball also rotates on its axis as it goes around the pole. If I were standing on the tetherball pole, I'd only see one side of the tetherball, but that's because the ball is rotating on the pole's axis, not it's own. The tidal lock can be likened to the rope. I've begged professors to explain how this is not the case, and none yet has. If you can explain, please let me know.
thekidscallmeBlue 8 months ago
@thekidscallmeBlue The Moon takes 27.3 days to turn once on its axis. But the Moon also takes 27.3 days to complete one orbit around the Earth. The Moon’s rotation time is exactly the same amount of time it takes to complete an orbit, it always presents the same face to the Earth.
~by Fraser Cain on October 14, 2008
jsomerville85 7 months ago
@thekidscallmeBlue @thekidscallmeBlue Because it only presents one face, astronomers say that the Moon is tidally locked to the Earth. Although the Moon looks like a perfectly smooth ball, it has slight differences in the shape of its gravity field. A long time ago, the Moon did rotate. But each time it turned, the Earth’s gravity tugged at it, slowing down its rotation until it only presented one face to the Earth. At that point, the Moon was tidally locked.
~by Fraser Cain on October 14, 2008
jsomerville85 7 months ago
@thekidscallmeBlue Many other moons in the Solar System are also tidally locked to their planet. In fact, most of Jupiter’s large moons are tidally locked.
~by Fraser Cain on October 14, 2008
jsomerville85 7 months ago
So a day of sunlight on the moon lasts for 15 days and then has 15 days of night?
bencrossley36 8 months ago
very good explanation, i got it now
thanks so much
kenkoong 8 months ago
Pokemoon.
hmcnmj 9 months ago
Great information.
Saadthegod 9 months ago
Physics is so badass.
KingRobertBaratheon 9 months ago
IT IS A COMBINATION OF MAGNET AND GRAVITATIONAL ATTRACTION
tyronejonez01 9 months ago
You know that the Nazis lives on the dark side of the moon and are planning an attack to earth! :O
topi85 10 months ago
Its only been 49 years...now I finally got it!! Thanks.
leonardodalongisland 10 months ago
This has been flagged as spam show
We do, however, see 60 % of the moon because of "Gravitational entanglement between center of the Moon's mass and center of the Earth's mass causes that Moon only librate" But good video, clean explanation.
TheTechnoVikings 10 months ago
You already have a 0:1 moon in your video, as well as our moon's 1:1, which is the final state of all despun bodies. To complete your CW set, make the 2nd 1:1 spin rate for a retrograde body spinning down:
At 12 oclock, the moon points up;
At 9 oclock, the moon points to the center;
At 6 oclock, the moon points down;
At 3 oclock, the moon points to the center;
Finally, back at 12 oclock, the moon points up again.
1:1 – 0:1– 1:1 ...or, from the center view:
A 2 – 1 – 0 CW spin-down.
KennethDine 11 months ago
From the SIDERAL PERSPECTIVE our moon would have spun down like this (CW on the left):
~-4 -3 -2 -1 -0 -1 ~^~ +1 +2 +3 +4 +5~
Clearly, a body with a retrograde rotation spins down oddly like this:
~-4 -3 -2 -1 -0 -1 ~^~
Two 1-rotation spins! So much for the God's Eye sidereal perspective!
CW rotating Venus, with an 'apparent' .9 sidereal spin rate, has already
passed (the 1st) -1 sidereal rotations and is currently slowing down to
this transitory zero-spin rate.
Think about it!
KennethDine 11 months ago
KennethDine 11 months ago
Pushing a dime around a quarter on a table (to simulate this zero-spin),
is another flawed demonstration they use for this zero-rotating moon concept
to fool themselves and others.
IN FACT, these flawed zero-rotating moon demonstrations PROVES that our moon no longer rotates around its polar axis!
Zero-spin is NOT impossible since Venus is now approaching that
zero-spin rate. Is the sideral perpective a "God's Eye" view of reality?
NO, it's a flawed view that confuses most people!
KennethDine 11 months ago
Your first moon with so-called "zero rotation" is in fact spinning clockwise 360° as it orbits 360° in the opposite direction. These two 360° circular motions in opposite directions merely cancel each other out from the sidereal perspective. From the center perspective, that moon is clearly spinning..
The 2nd so-called 1-rotation moon is NOT spinning from the center perspective.
The last moon is spinning 7 times from the center perspective, and 8 times from the sidereal perspective.
KennethDine 11 months ago
The earth's crust at the Marianas Trench has been pulled outward, and evidence of the tearing of the crust and "folding back " of the crust can be seen is northern South America. The back side of the moon is rippled to the halfway point of expulsion and relatively smooth, while the side we see is rough and made of different materials. The moon, if expelled from the earth, would have a breakthrough point and an escape point. There is a central "navel" visible on both front and back of the moon.
ETHIOLOGIST1 11 months ago
@scubaguylovemuaythai red represents the side we see
MrBenIPresume 11 months ago
So the speed of earth's rotation about its axis is slowing down because of the force of gravity caused by the sun? I didn't know that. What's the rate?
MrBenIPresume 11 months ago
I always found syncronous rotation difficult to visualize. Because if the Moon spins, how could it always have a same face toward us and remain in orbit. This video helps a little to understand it better, but I suppose a lazy susan model might be better?
skepticalinquier 11 months ago
I am working on an animation of the solarsystem and am currently stumped when I've got to triton, a moon on neptune. It orbits in the oposite direction to neptunes rotation, I am happy with that however it is said to have a Synchronous Rotation. Does this mean one face of triton is always facing neptune (and therefore spinning the opposite direction as neptune). People have told me Synchronous Rotation always implies it is spinning the same direction as the planet rotation......
bradkey98765 1 year ago
An excellent illustration. Now I understood why we see only one(same) side of the moon although I was trying hard to understand this for last 25 years ! Nevertheless I am happy today.
Harish
amrutvani2 1 year ago
damn it. Did anone wach this video? Watch. Learn. Understand. Then comment....
stuckinthecities 1 year ago
Excellent Work and Excellent Illustration...Much thanks
3edcvfr43edcvfr4 1 year ago
I never knew that? That the moon doesn't rotate on it's axis. I always thought that as it rotates you would see a different face if you were in Russia or Saudi Arabia
LifesHardLessons 1 year ago
Thank you!
SoFrec 1 year ago
This comment has received too many negative votes show
Moon doesn't rotate at all!
Center of mass of the Moon is closer to the side we see. Gravitational entanglement between center of the Moon's mass and center of the Earth's mass causes that Moon only librate, but not rotate.
Such shifted center of the Moon's mass is due to collision with the Earth in the past..
If one day Moon begins to rotate, we will be in big trouble - massive earthquakes all over the world. Not to mention volcanic activity, tidal anomaly and other nasty stuff.
CrazyScience 1 year ago
@CrazyScience If the Moon did not rotate at all, then the same side would not always face us, which it does. The Moon is tidally locked to the Earth, meaning it's period of rotation is the same as it's period of revolution. This is a very stable configuration.
astrogirlwest 1 year ago 18
@astrogirlwest
Yes, it appear that rotate. Exactly as ball attached to rope and if you rotate it around your head - attached point on that ball will be always oriented toward you. But, ball itself appear to has synchronous rotation with exact period... And you will feel steady pull if rotation is at constant speed.
"Tidally locked" or gravitational entanglement. Sounds similar, but different words. My point is that moon once may begin to rotate freely, and that will spell disaster.
CrazyScience 1 year ago
@astrogirlwest YOU ARE WRONG! THE FRONT SIDE OF THE MOON HAS MAGNETIC DEPOSITS REF: NATIONAL GEOGRAPHIC 1973. THE MAGNETIC ATTRACTION KEEPS THE "FACE" POINTED
TO THE EARTH.
tyronejonez01 9 months ago
@tyronejonez01 1973? That may be the problem.
JJAB91 8 months ago
@astrogirlwest how can we know that 4 sure,ha?! like to be 100% sure that somebodu isn`t hiding something etc.....
sonikue23 6 months ago
@astrogirlwest The moon is rotating it never used to but it dose NOW exsplane the if you can? cheers..
teresa64miller 4 months ago
@CrazyScience
you're not educated
stuckinthecities 1 year ago
@stuckinthecities
I don't know why you said that?!
Are you educated?
CrazyScience 1 year ago
@CrazyScience I also believe that the moon hit the earth in the past. There are many obvious reasons to believe this theory over the official theory of a mars sized object striking the earth and creating the moon. The side we see is the side that hit the earth. I believe that the moon may have been covered with ice before the impact. Impacting the molten earth the ice was stripped from the moon, this created all of the oceans. The actual point of impact creating the pacific. I have more
lowpricedpaint 11 months ago
@lowpricedpaint
I think that water already existed in time when moon hit the Earth. Also, perhaps primitive form of life existed. One day scientist may found fossil traces on the surface of the moon. What is water actually? Hydrogen and oxygen. Such atoms are everywhere in the universe, it is matter of time when it will bond and reach the Earth's atmosphere. The rest is history. And, water exist on the moon, but in ice form beneath the surface.
Here on YouTube reply, no much room for answer.
CrazyScience 11 months ago
@CrazyScience They say the earth was completely covered with molten rock and volcanoes and that water was brought by comets, this I do not believe. But I firmly believe the moon did hit the earth creating Mariana Trench at the impact, and creating the North Atlantic Ridge on the opposite side of earth splitting the continents. The dark craters on the moon are result of impact with earth. We would know for sure if we could get some real moon rocks, not the fakes from fake moon landings.
lowpricedpaint 11 months ago
@CrazyScience It is good to finally find someone who agrees that the moon did hit the earth. I have tried to present this theory to other scientist and they totally try to discredit this theory. I myself am not a scientist, but I can see the obvious. I to believe there was some life present on earth at the time of this collision. Could it be possible that the atmosphere was created when ice and fire and volcanic gases mix. No other known planet has water like earths water.
lowpricedpaint 11 months ago
@lowpricedpaint
"I have tried to present this theory to other scientist and they totally try to discredit this theory."
If a theory (actually, you mean "hypothesis") is implausible or lacks any supporting evidence, it's valid to dismiss it until supporting data is presented. Cut out the persecution complex.
"I myself am not a scientist, but I can see the obvious."
You may find that reality is sometimes counter-intuitive. There was a time when it was "obvious" that the Earth is flat.
zendakk 11 months ago
finally a clear explanation,
antovi 1 year ago
So when the earth year and day rotation match then will only one side face the sun?
one side locked in permanent winter one locked in scorching summer?
Can we predict what side?
YamiPoyo 1 year ago
no song witch means getting boring ok or mosies
Ninjamaster581 1 year ago
Good upload, thanks.
Peace.
netlethe 1 year ago
the best explanation, very nice video.
ajjjju84 1 year ago 22
Finally i got it, thanks for the video
rickynofx86 1 year ago
What about the earth rotation on its access, would have made the video more clear
farhaneee 1 year ago 4
@farhaneee and on its' axis would have been even clearer ;)
Moonteeth62 1 year ago
Changing the subject somewhat - the earth/moon system rotates about their CofG once per moon orbit - correct? If the earth and the moon had the same mass they would rotate about a point mid-way between them, as it is the CofG is about 1/4 way into the earth. Does this mean that this system CofG follows an ellipse around the sun and the earths centre does a sort of wobble along that ellipse?
DellHell1 1 year ago
thank you so much!
arjunmax7 1 year ago
I wish everyone would watch your video. I am sick of explaining too everyone that the moon rotates.
wavepsychic 1 year ago 2
my jerk friends argued with me about this tonight, your video proved them wrong. thank you for making them shut up.. yes the moon spins.. yes we spin.. and yes we see the same side of the moon.. you'd be suprised how oblivious people are of whats right over there heads!
PaintSlinger99 1 year ago
This is just a way of twisting perception! The 1st demostration is a moon without rotation reletive to the Sun not the Earth. The so called,"slow rotation", is actually a fix position orbiting EARTH. Anyone can grab a ball a spin themselves and see only one side at all time,the ball never rotates in your hand. Why the BS physics?
wiseyeffect 1 year ago
@wiseyeffect Actually in the first case the Moon has no rotation around its own axis with respect to the background stars. In the other cases the Moon does have rotation around its own axis with respect to the background stars. I'm not sure if this answers your question, but the two cases are definitely different. No BS physics necessary.
astrogirlwest 1 year ago
@astrogirlwest Why not say it's in a fix position(no rotation) that orbits Earth?
wiseyeffect 1 year ago
@wiseyeffect I am really not sure what you are asking here. In the first case that I show in the video your statement is essentially what I am illustrating and what I have said - "Moon without any rotation...". However this first case is not a "correct" case in the sense that this is not what really happens.
The Moon DOES rotate on its own axis with respect to the background stars while also revolving around the Earth. The key is that these two motions occur at the same rate.
astrogirlwest 1 year ago
@astrogirlwest so does astronomers ,and or Nasa say radio satilites rotate or just orbit?
wiseyeffect 1 year ago
@wiseyeffect That depends on the satellite. The ISS and space telescopes have thrusters and can actually control their direction and maneuver in space so they are have more complicated motion.
Any object that orbits another body without any additional thrust will eventually become "tidally locked" like the Moon is to the Earth. Even the Earth's rate of rotation (day) is slowing to match the rate of revolution around the sun (year) - though this will take billions of years!
astrogirlwest 1 year ago
@astrogirlwest how is it that the moon being such a large body to the Earth every became locked with Earth? It would seem all the near by planet to the Sun would of lock long before the moon would with the Earth.
wiseyeffect 1 year ago
@wiseyeffect It is true that the Sun is much larger, but the Moon is MUCH closer and distance makes a huge difference (the gravitational effect increases proportional to the mass, but decreases as one over the distance *squared*). You can see this also by the gravitational influence the Moon has a over the Earth's tides - the Moon has a much larger effect on tides than does the Sun.
But Mercury is tidally locked to the Sun. And most moons of other planets are locked to their parent planet.
astrogirlwest 1 year ago
@astrogirlwest Thank you for the information!
wiseyeffect 1 year ago
@wiseyeffect You're welcome! Thanks for asking such good questions!
astrogirlwest 1 year ago
why did you colour the other half of the moon red? just wondering
shayanmh 1 year ago
@shayanmh Just so it would be easier to see/keep track of that half of the Moon.
astrogirlwest 1 year ago
This has always been somehow out of my ability to visualize. Thank you so much for this. Now when I look at the moon in its phases, it will make sense to me.
wlh70 1 year ago
What are the chances of this naturally occurring? Obviously greater than zero but seriously? As the moon moves further away with each orbit will we eventually see the other side and was the other side once viewable when the moon was closer?
Great video!
owensaruba 1 year ago
@owensaruba Synchronous orbits are very common. Many objects in our solar system are synchronous with their parent bodies. It is a natural, stable orbit.
astrogirlwest 1 year ago
@owensaruba Your other questions are good ones, and I don't know the precise answer, but I would think that the stability of the orbit (and the synchronicity) would be maintained as the Earth-Moon distance increased as this is a gradual process. Also the Earth's orbit is slowing as a consequence and so eventually it will be in a resonance with the Sun-Earth-Moon System.
As to whether Earth ever saw the other side of the Moon? I would say yes, but in a time before humans were on the planet.
astrogirlwest 1 year ago
Best explanation & video I've ever seen on the subject. THANK YOU SO MUCH. This has always puzzled me...
qfdman 1 year ago
Best explanation & video I've ever seen on the subject. THANK YOU SO MUCH. This has always puzzled me!
qfdman 1 year ago
Best explanation & video I've ever seen on the subject. THANK YOU SO MUCH. This has always puzzled me!
qfdman 1 year ago
@qfdman Great! Glad it was useful.
astrogirlwest 1 year ago
I've been telling people this for years, that is the reason why we always see the same side of the moon during a full moon, but rarely does anyone believe me. Thanks for the video, summed it up very nicely.
zzboobzz 1 year ago
The moon doesnt have a red colored side.
CogitoErgoCogitoSum 1 year ago
@CogitoErgoCogitoSum You are correct. I coloured it red in the video for illustrative purposes only.
astrogirlwest 1 year ago
i just finished my 8th grade school year and our 4th qtr.subject was astronomy. we went over this material in clss..(Why we always see one side of the moon.) And during the school year while we were studying it, i could never understand why. the explination was that the moon rotates on its axis as the same speed as earth does..something like that..but only now, halfway into my summer break, i finally understand! ^^i also won the science award because i was my teachers fav.&exceptional student!
oshawboi808 1 year ago
@oshawboi808 I'm really glad it helped you to understand! :)
astrogirlwest 1 year ago
Great Job ! It's kinda Ironic that the ancients seen only the same side of the moon as we do? I believe it was only after the Apollo 8 mission that mankind 'seen' the other side of the moon. Again, Great Job AstroGirlWest on delivering a concept that I think most people do not realize, and a great fun-fact ! There's a whole lot more to our moon (I believe our moon's name is Luna) than most people realize !
camil1881 1 year ago
A satellite in a synchronous orbit that is both equatorial and circular will appear to be suspended motionless above a point on the orbited planet's equator............
GEPreotescoE 1 year ago
Is it true that moon is the only satellite wich behave like that in the whole solar system ? Answer pls....
EyesonWhat 1 year ago
This has been flagged as spam show
Your demonstration doesn't explain why the moon's rotational period and it's orbital period are so nearly identical.
The moon's mass distribution is not perfectly uniform. Tidal friction (much like what occurs on earth but much more subtle, since the moon is essentially a solid body) has caused its rotation with respect to the earth to stop. Think of an out of balance wheel that is allowed to spin freely. Eventually the wheel will come to a stop with the heavier side down.
lordlollipop 1 year ago
This has been flagged as spam show
Your demonstration doesn't explain why the moon's rotational period and it's orbital period are so nearly identical.
The moon's mass distribution is not perfectly uniform. Tidal friction (much like what occurs on earth but much more subtle, since the moon is essentially a solid body) has caused its rotation with respect to the earth to stop. Think of an out of balance wheel that is allowed to spin freely. Eventually the wheel will come to a stop with the heavier side down.
lordlollipop 1 year ago
Your demonstration doesn't explain why the moon's rotational period and it's orbital period are so nearly identical.
The moon's mass distribution is not perfectly uniform. Tidal friction (much like what occurs on earth but much more subtle, since the moon is essentially a solid body) has caused its rotation with respect to the earth to stop. Think of an out of balance wheel that is allowed to spin freely. Eventually the wheel will come to a stop with the heavier side down.
lordlollipop 1 year ago