Basic Knowledge: Lunar Phases

[gogogogommmm]

wats that horrible continuous beep in the background... otherwise gr8 video.. !!

[beeska85]

nice channel! thanks for all tips from astronomy!

[Spieldamelenium]

Is it common to see the moon at day time?

[truemartian]

@Spieldamelenium Yes. As the moon's orbital path takes it to and from the New Moon position you will see its crescent and quarter phases more during daylight hours.

[hummerume]

@truemartian During the full moon phase, when the earth is inline and between moon and sun, doesnt the shadow of the earth fall on the moon and make it invisible? how can the moon shine when it is in the shadow of the earth....

This doubt has always bugged me, maybe it has a simple explaination but i just don't get it..... please help

Regards

[truemartian]

@hummerume If I understand it correctly, the plane of the moon's orbit is inclined(tilted) a little, relative to the plane of the earth's orbit around the sun. Because of this only two times a year on its trip around the sun the earth/moon system line up enough along the direct line of sight from the sun to produce a lunar eclipse. sometimes the earth's shadow falls above and sometimes is falls below the position of the moon because of this inclination.

[hummerume]

@truemartian :) hey thanks for takin time to explain, i appreciate it. What you've said does makes sense. somehow i feel at peace now when it comes to lunar phases...

Thanks a ton buddy

Best Regards

[truemartian]

@hummerume Hey no problem. I'm glad to help.

[GenevaSuspension]

I'm in Halifax, Canada, and for the past 4 months I've been looking at a bright object in the sky, and I think it's Jupiter since I'm pretty sure I'm seeing some moons around it, and it's the brightest object in the sky from 5pm til 2am. Thought at first it was Alpha Centauri, but I wouldn't be seeing planets...so what other objects might it be because most astronomy websites don't mention any particularly bright objects in my part of the sky.

[truemartian]

It certainly sounds like Jupiter. There should be 4 moons visible. If you download Stellarium and zoom in on Jupiter it will show you the current positions of the moons. You can use this to identify the moons in your telescope.

[GenevaSuspension]

If the Moon was in between the Earth and the Sun, wouldn't that be a Lunar eclipse and not a new Moon?

[truemartian]

This is true. However the moons orbit is inclined so that it only passes directly between earth and sun at certain times of the year. This is the time when we have opportunity to see solar eclipse.

[Spraycando]

Sunderland Astronomical Society Ask? " When I wax her crescent moon do I have to ask. I understand it should be done evrey four weeks.Should I touch the terminater.

[GaseousAnomaly001]

Is the webcam flipping the image? You say east and point to the left, and vice versa for the west.

[truemartian]

The East/West references are correct relative to the moon phases on the illustrations. They are independant of left/right in the video presentation.

[Gengar10000000000]

Nigga, you readin that shit off a paper.

[tapolna]

Thanks

[tapolna]

Great video, thanks for the lesson.

Does a solar eclipse occur only when the Moon is in it's a new Moon phase? And, so why is the Moon's position just so for a solar eclipse to occur? And, are there any "bridges" on the Moon? And, what do you think about retired Major ... I forgot his name ... from the US military who talks about aliens, artificial satellites around Jupiter and ancient cities on Mars etc? ... Yeah, I know, what you might say, but he's a retired Major ...

[truemartian]

Simply put, yes. A solar eclipse can only occur at new moon. The phases simply describe where the moon is in its orbit relative to the sun and earth. Likewise, a lunar eclipse can only occur at full phase.

[truemartian]

Titles mean nothing if you cant back your claims with concrete evidence. Show me the alien ray gun, not a fuzzy flying dot, not a shadowy figure, not a sketch from a dream, not a hill that might look like an overgrown pyramid. I want to see the blinking lights on the stun settings. I even want to fire it. Demand more of these kinds of people.

[Yarwer]

hahaa xD

legend

[rayunseitig]

Got it!! Thanks, On the quarter phses you will see 1/2 of the moon. I guess we could say we are seeing 1/4 of a ball which is 1/2 of what is there facing us.

Also when we are 'looking' at the dark side which is the side facing us that is unilluminated, thus called dark.

We never see the back side, dark or light as you could not see the 'far side' from where we are, Yes?

[zekewheel]

Thanks! Have you ever heard about the New Jerusalem? It is suppose to be so big that it can fit right inside of the moon with eight miles of crust going around it. Otherwise from 12,000 furlongs or 1,500 miles,

a Crystal golden pyramid! I do artwork about it if you're interested. Thanks again! Is the moon higher then the earth so it shows up

as a full moon when it is behind the earth? Don't understand that completely. And also my girlfriend says the moon doesn't rotate is that true?

[truemartian]

We see a full moon when the earth is in front of the moon relative to light coming from the sun. The moon rotates once every 27 or so days(cant remember the exact figure). In other words the moon rotates once for each time it completes a revolution around the earth. Its rotation is gravitationaly locked to the earth so that we see only one side of it.

[ironzeppelinoverhead]

thanks

[ironzeppelinoverhead]

hi truemartian,im 12 and have just become interested in astronomy,could you tell me what latitude the planesphere would have to been in england as i cant find any local retailers,thanks Ben

[truemartian]

You can find your precise latitude by searching for your home on Google Earth.

[truemartian]

Maybe easy work but definitly not big money ;-)

[slowfinger2]

Thanks for putting this up. A guy is saying that a moon seen in the afternoon is a new phenomenom since 1995. He is basing a theory on this. He's wrong, but won't listen to logic and personal observations. Many people have seen the daytime moon since time immerorial. Am I right? Enter "New Moon Phase" and you'll see what I mean. This guy is using junk science. Can you help debunk his crap. He's using twisted logic and contradicting himself, and trying to sell a book saying it's a new discovery.

[truemartian]

You are right that you can see the moon during daylight hours. Its been like that since, well... since the beginning. :) The moon, during daylight hours, was one of the first objects I would train my first telescope on more that 20 yrs ago. As for crack pots, you cant tell anyone anything if they arent willing to listen. ;)

[jleack]

Good job. Very informative.

[widecaster]

Thanx for posting this video. Very interesting!

[gaiald]

good video

[cateyesTV]

well i have my planisphere... i'm working on getting 10x50 binoculars... i dropped out of the ebay auction at $510.00, i thought that was steep for a used pair, but learned what a good pair should cost me... will keep you posted... thanks for taking the time to explain the moon phases in detail... looking forward to the next vid.... peace

~cateyes~

[truemartian]

Thats great to hear. I am glad to see I am helping someone in some small way here. Thanks for watching!

[truemartian]

One more thing... Take that planisphere out under the stars! No need to wait for binoculars to learn the constellations. Learning the constellations is very important. Its as important as learning the streets around your house when it comes to star gazing.

[BrunoTheQuestionable]

Thanks for adding these - it might lead to more interaction in the group.

I've always been unclear about moon phases, so I found this useful.

[mixael2006]

Great information.. look forward to more.

[mixael2006]

I couldnt agree more.... Great information look forward to more.

[JaalaJ]

Fantastic video.