Sort of makes you feel insignificant, but then again those stars, planets, galaxies, the Universe has basically been doing what it's been doing for the last billion years. Stars don't calculate how far they are from another star. Light doesn't know how fast it's traveling. The next galaxy over doesn't know when it will collide with ours. So, in that perspective we are not insignificant at all for we can do what the Universe cannot.
never questioned this before but if night sky is mostly if not all milky way, how can we see andromeda? i dont understand how good telescopes are but even some of these distances seem crazy for a telescope let alone andromeda
@kyleag9 We can see other galaxies because 1. The stars are so far away from each other that they are not blocking the view and 2. The light that travels from the galaxies are in a vacuum, and is therefore not blocked by anything either.
I am going to do myself a favour and ignore the religious comments because they tend to bring my piss to a boil...
It is astounding how immensly vast a single galaxy is, not to mention when you cound that there are roughly 100 billion galaxies like our own dispersed in a visible universe which is around 90 billion light years in diameter.
@davefk the black hole is in the centre and its sucking in stars dust etc so its all condensed in that area. they say there are suns orbiting the black hole traveling over 1,000,000mph. great video btw love it when its put in perspective. makes you feel so insignificent. lol
Another thing is, even though we are so incredibly tiny in galactic terms, we're still incredibly huge compared to stuff like atoms. Its really incredible how extreme scales and sizes in universe are.
What the most amazing thing is that looking up at the sky you look into the past. Every single star (or light coming from the star) that we see, we see as it was in the past, very distant past. And looking pictures or other galaxies or pictures like deep field is just absolutely amazing. Knowing that right now, at this moment, there are trillions and trillions of other planets out there, with billions of creatures and different life forms on them..most of whom wonder if they're alone...
@INMATE2468 Well you do seem like a very smart individual, judging from your great grammar use. I guess all of us have no option, other than to take your word for it. Thank you kind stranger, for explaining to me how I'm supposed to live the rest of my life! And such a nice way of putting it by the way. I hope you have a great day :)
SubhanAllah God is The Creator of all things. He is OUTSIDE of his own creation(including the concept of time) Imagine how big HE is!!! Yet people remain arrogant ....
I mean the stars are not equal distant from each other as they were thousands of years ago. The night sky would look completely different in thousands of years wouldnt it? The scientists must pick a specific date so all stars are in the same time zone to get an accurate image.
When scientists depict the image of our galaxy like the one in this video, do they calclulate where they are now by calculating their trajectory or use the images they recieve of them of where they were thousands of years ago??
I seriously think there are more beings out there for two reasons...
1) Why would God use all his abilities just to make a nice pretty multiverse for us to look at?
2) What did Jesus Christ say? "I have sheep that are not of this pen"
Makes you wonder how our creator could make so many different beings each with their own personality and thoughts. Genesis is definatly an interesting read :)
Sal, as I understand it, the main reason we don't have much information on the opposite side of the galaxy is because from our perspective you can't measure the blue/red shift of objects, since they are moving horizontally. I don't think the center of the galaxy being in the way has much to do with it.
Finally,someone that explains clearly the questions I raised in the 9th grade. My geography teacher was pretty much bored and could not wait to go for her coffee break,rather then sit down and explain.That was the main reason why I choose history over geography,I was fascinated about the stars, universe, and so on,but yeah..many teachers could not care less about what the student would like to learn...at least now after some years,I can pick up where I left off.
Even after finishing this video, it takes couple of minutes to response....Simply there is no word to describe the size of this universe. What the hell!
Sal, thanks for loading these up with scale comparisons and analogies. We are not equipped to appreciate the massively large and super-small without analogy. I wish you could bring a 3D animator onboard at the Khan Academy to assist with presentations like this (better visuals in this case would really serve to strengthen analogies and provide a nice smooth transition from one scale to the next.) Great stuff!
with all due respect when you say life has not been observed, we firstly have observed an UNIMAGINABLY small portion of the universe. this being said, considering the universe is in fact infinite i honestly think it is not only ignorant to assume we are the most advanced civilization in what we understand the universe to be. Do not get me wrong i am a firm believer in god but i also know that judging by pure odds life is abundant.
with all due respect when you say life has not been observed, we firstly have observed an UNIMAGINABLY small portion of the universe. this being said, considering the universe is in fact infinite i honestly think it is not only ignorant to assume we are the most advanced civilization in what we understand the universe to be. Do not get me wrong i am a firm believer in god but i also know that judging by pure odds life is abundant.
ERROR: At 11:05 you compared the Oort cloud with the size of the Universe, you clearly meant the Galaxy hence 1mm ~ 100m.
If the Oort cloud = 1 light year = 1mm in diameter, and the visible Universe is 13.7 billion light years in radius (27.4 billion light year diameter), then on that scale the visible Universe would be 17,029 miles wide (2.1 times the diameter of Earth.
@DrFHead What hypocrisy dude? What the fuck are you talking about? I don't believe in alien life, I said that in my post. I believe in the possibility of alien life, which is something that many staunchly deny. You don't look like an ass, you are an ass, making up arguments without any reason whatsoever. I get it dude, you are one of those stubborn anti-aliens who don't even ponder about the possibility of their existence. If you felt insulted by my post, suck it up for being so narrow minded.
@DrFHead Nowhere in my post did I "authoritatively claim" there has to be intelligent life, especially without any proof. My criticism went to those who staunchly deny it, nothing more, nothing less. I do not believe in alien intelligent life, I believe in the possibility of its existence given the size of the Universe. Save your rant when it actually makes sense. Here you just ended up looking like a stupid ass.
This video really reminds me of the short movie: "Powers of Ten" which talks about relative sizes and distances in the universe like this khanacademy video. You guys should really Powers of Ten, thumbs up so people know. =D
Great work sal I havn't watched any of your videos in a long time, but from watching these i'll make sure I check in more frequently =) , now you just need to explain the very small and most people will be set. Imagining a hydrogen atom as 1380000000000000000000 times smaller than a grain of sand is simply too difficult for me :( .
even the biggest star is a tiny little grain of sand when it compares to a galaxy. and a galaxy is a tiny little grain of sand when it compares to the universe. and the universe is a tiny little grain of sand when it compares to _____.
@amcbirds Guess what, he probably didn't. There are very solid explanations about the origin of galaxies, solar systems, planets etc.. A God fills very little use.
Sal, I was thinking about the size and distances of stars yesterday morning (and it was pretty coincidental that you posted these videos a few hours later) and there is one little thing you may want to consider (it may help in blowing your mind, I don't know). Earth is traveling about 30,000 km/s. If you were to move 30,000km/s it would take about 40 years to get to Alpha Centouri. 4.2 light years is VERY far, but we manage to travel this far throughout our life span!
And there are still idiots out there that authoritatively declare we're the only intelligent life in the Universe. I can't think of a more underestimated and often misused word than "Universe". It's simply unfathomable, yet people refer to it way too lightly.
@Ikus13 They may be right. The only position you can really take regarding life is purely agnostic. I am inclined to think it likely there is life elsewhere, but, in the absence of evidence, all that can be said is "I don't know". For example, if the chances of life arising were less than one in "The number of stars in the universe", i.e, under ordinary circumstances, spontaneous abiogenesis would be considered impossible, then a universe of this size would be needed to make it happen once.
@thisisnotanick I disagree. I am agnostic about whether the cheese in my fridge has gone off, in that I presently don't know. However, once I have evidence one way or the other, i.e. I check by smelling the cheese, then I have become a 'Gonstic', that is, I have the knowledge of the state of the cheese in my fridge. An Agnostic says "I don't know". He makes no claim as to whether that knowledge is ultimately attainable. To claim such a thing would be to claim knowledge would it not?
@ImposingSumo this is correct. An agnostic does not lay claim to any knowledge, but an athiest is definitive in his or her's belief that "god does not exist"
@zackboomer No, atheism is the non-belief in a god, not the claim that there is no god. Theist means "one who believes in god" or "with god" and atheist means "not one who believes in god" or "not with god".That's all it is. No claim of no god is being made. Maybe you have heard atheists make the claim that there is no god, but that's not the same as atheism being that claim.
@zackboomer As I said, it's not the position that there are no gods/deities. It is just simply not believing in them. Not believing does not mean believing against or that there are none. It means that you simply do not believe in them. It's like the ruling "not guilty" to borrow someone else's explanation. Not guilty doesn't mean innocent, it means that you don't have evidence to claim them to be guilty. Just the same, I have no reason to thing god is real. Doesn't mean I believe there is none.
@zackboomer Atheists doesn't either claim to have knowledge wherever God exists or not, an Atheist just lacks the belief in such a being.
And regarding other life in the universe.. I am confident there is other lifeforms out there.. We have only examined ONE life suitable (based on how life on earth works) and that very planet is sparking with life.. Imagine that there are trillion upon trillion of other planets out there.
@zackboomer I don't know any atheists that would claim that. Atheism is, in a nutshell: "In the absence of evidence to support this supernatural theistic claim, I don't believe. If evidence is presented, I will change my belief".
No, I'm saying that humans are not the only intelligent life in the universe. God is intelligent, and He is most certainly alive, although not really in a biological sense, because He is spirit. There is no good reason to believe in life on other planets, because life cannot spontaneously appear; it has never been observed, and is scientifically impossible.
Recent studies that adjust the drake equation to what we presently know about our galaxy show that there could potentially be as many as 10 intelligent, broadcasting lifeforms in our galaxy alone.
Nonsense. Whilst I can agree that any life is likely to be well and truly beyond our reach - even if we somehow reach Light speed travel (which isn't that likely if all even possible) - your claim that they will be 100 million galaxies away is totally baseless. Which is because the odds of life to exist on a planet are relatively unknown.
Those odds are always based on EARTH life, which has adapted TO EARTH. Therefore for other planets it could develop under different criteria.
And I'll go further to say that the number of planets within the habitable region (which is again generally restricted to what WE know as life, so the real region may widely contrast from what we think) is actually fairly high when you consider the sheer number of stars; it's even very likely there are many habitable planets of the right size in the right place, even within our galaxy. That doesn't guarantee life of course, but it does make your claimed odds nonsense.
@Ikus13 The evidence is what will ultimately be authoritative concerning intelligent life in other star systems. Have you ever heard of the Fermi Paradox? Its interesting to read about.
@Ikus13 Declaring that there is life in the galaxy is almost as bad as declaring that there is not. I'm am all for hypotheses, but making claims without evidence to back it up, is just ignorant.
Sort of makes you feel insignificant, but then again those stars, planets, galaxies, the Universe has basically been doing what it's been doing for the last billion years. Stars don't calculate how far they are from another star. Light doesn't know how fast it's traveling. The next galaxy over doesn't know when it will collide with ours. So, in that perspective we are not insignificant at all for we can do what the Universe cannot.
lattask8er 2 weeks ago
never questioned this before but if night sky is mostly if not all milky way, how can we see andromeda? i dont understand how good telescopes are but even some of these distances seem crazy for a telescope let alone andromeda
kyleag9 1 month ago
@kyleag9 We can see other galaxies because 1. The stars are so far away from each other that they are not blocking the view and 2. The light that travels from the galaxies are in a vacuum, and is therefore not blocked by anything either.
deffan84 4 weeks ago
I am going to do myself a favour and ignore the religious comments because they tend to bring my piss to a boil...
It is astounding how immensly vast a single galaxy is, not to mention when you cound that there are roughly 100 billion galaxies like our own dispersed in a visible universe which is around 90 billion light years in diameter.
Now go read about the multiverse theories...
TheUnchainedMind 1 month ago
How can all this just exist by it self ?
aimalkhan123 1 month ago
@aimalkhan123 crazy init...
lawsontennant 1 month ago
@davefk the black hole is in the centre and its sucking in stars dust etc so its all condensed in that area. they say there are suns orbiting the black hole traveling over 1,000,000mph. great video btw love it when its put in perspective. makes you feel so insignificent. lol
dan62613 1 month ago
What makes the center of a galaxy so bright if it is a black hole?
davefk 1 month ago
It`s not that the Universe is so big , it`s just that we are all so small !!!!!!!!!!
SGRblink 1 month ago 6
when he said the grain of sand and the football field.. did he mean the football field is the galaxy not universe?
rory12349 2 months ago
If I remember correctly 1 light year is 5.8 trillion km.
Lixhul 2 months ago
This is a confirmation that science has proved god exists.
AmeroEuroDollor 2 months ago
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the technology is there,
--really?
its all theoretical
-- aww
but its there.
-- buh?!
RaptorButts 2 months ago
The stunned enthusiasm of your delivery is adorable and entirely justified.
Kitsua 2 months ago
go to 7:25 and he stutters so much!
smalboalex99 2 months ago
What this video shows in other words is that interstellar travels are an impossibility, at least with our present and foreseeable technologies.
237Michael 3 months ago
@237Michael wormholes allow travel over great distances to take seconds.
the technology is there, its all theoretical but its there.
GoodCat01210 2 months ago
It was God.
Tazza17 3 months ago in playlist More videos from khanacademy
1 person disliked this video. I dont fully blame him, i can barely believe this either.
MrSanjayV 3 months ago
i feel tiny :(
tomroylance 3 months ago
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WE ARE A SPECK, LIVING ON A SPECK, THAT'S REVOLVING AROUND A LARGER SPECK.
We are infinitely insignificant in the scope of the universe - yet we complain and fight among ourselves over insignificant things.
If this speck that we are living on were to suddenly disappear - would the universe even take notice?
vlweb3d 3 months ago
Another thing is, even though we are so incredibly tiny in galactic terms, we're still incredibly huge compared to stuff like atoms. Its really incredible how extreme scales and sizes in universe are.
derbigpr500 3 months ago
What the most amazing thing is that looking up at the sky you look into the past. Every single star (or light coming from the star) that we see, we see as it was in the past, very distant past. And looking pictures or other galaxies or pictures like deep field is just absolutely amazing. Knowing that right now, at this moment, there are trillions and trillions of other planets out there, with billions of creatures and different life forms on them..most of whom wonder if they're alone...
derbigpr500 3 months ago
yeah and all this was made and put into perfect balance by chance right? *sarcastic Laugh*
RoejaStrick 4 months ago
Gods fake get fucking over it.
INMATE2468 4 months ago
@INMATE2468 Well you do seem like a very smart individual, judging from your great grammar use. I guess all of us have no option, other than to take your word for it. Thank you kind stranger, for explaining to me how I'm supposed to live the rest of my life! And such a nice way of putting it by the way. I hope you have a great day :)
xC0M9UT3RxG33Kx 3 months ago
mind officially boggled, good lord. Can't wait till hyperspace...
sumslakker 4 months ago
Maybe you should be more specific, There are less solar systems then there are stars because there are sometimes multiple stars per system.
LethalLithiumLi 5 months ago
there is a smaller star closer to our solar system about a half inch on screen to the tp left.
MrLegit145 5 months ago
11:10 i think you meant our galaxy as a hole, not the universe
T4l0nITA 5 months ago
Universe is Science. God shall never be included in the discussion.
niconikko 6 months ago 11
@niconikko wrong
msms47 3 months ago
@msms47 How so.
MrBazingafy 3 months ago
@MrBazingafy becaus god made science or u can say that god is sicence
msms47 3 months ago
@msms47 Why, though. Don't just make baseless claims.
MrBazingafy 3 months ago
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@niconikko "Universe is Science. God shall never be included in the discussion" thats the best comment i have ever read!
UkMetro 2 months ago
@niconikko God is the creator of the universe and everything in it.
Mancunian786 1 month ago
@niconikko can science create a universe ? science is about knowing the universe and its mysteries.. not creating it.
aimalkhan123 1 month ago
@niconikko it depends on what you consider god.. because somethimes may have nothing to do with religion...
you can simply say, nature is a god... a true god a true criator... but not in religious terms...
PrtuguesePride 4 weeks ago
@niconikko Science discover, God creates.
QadirPopal 3 weeks ago
SubhanAllah God is The Creator of all things. He is OUTSIDE of his own creation(including the concept of time) Imagine how big HE is!!! Yet people remain arrogant ....
MsWatcheverything 3 days ago
I mean the stars are not equal distant from each other as they were thousands of years ago. The night sky would look completely different in thousands of years wouldnt it? The scientists must pick a specific date so all stars are in the same time zone to get an accurate image.
requshei 6 months ago
When scientists depict the image of our galaxy like the one in this video, do they calclulate where they are now by calculating their trajectory or use the images they recieve of them of where they were thousands of years ago??
requshei 6 months ago
I seriously think there are more beings out there for two reasons...
1) Why would God use all his abilities just to make a nice pretty multiverse for us to look at?
2) What did Jesus Christ say? "I have sheep that are not of this pen"
Makes you wonder how our creator could make so many different beings each with their own personality and thoughts. Genesis is definatly an interesting read :)
PhilipK100 7 months ago
@PhilipK100 God didn't create the Universe
TheAppleShampoo182 6 months ago
@TheAppleShampoo182 hahahahahah wow your stupid
b0uGhTbYChrist 4 months ago
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@b0uGhTbYChrist You think God created the universe? You think Jesus is real? You are really stupid
TheAppleShampoo182 4 months ago
DAMN! srry forgive my language but its true! Is our sun rotating and circling around the center of the milky way?
ArtemisTemariRebel4 8 months ago
80,000 years to Alpha C! Imagine, by that time we would be a different species!
BlackBeardDelight187 9 months ago
I think NASA knows SO MUCH MORE and they're not telling us. :(
DarkShadowMegadeth 9 months ago
one guy missed
paulceltics 10 months ago
so every star has a solar system with planets? wikipedia says there are six million solar systems with planets and 200-400 billion stars.
ninjaturtle205 10 months ago
Sal, as I understand it, the main reason we don't have much information on the opposite side of the galaxy is because from our perspective you can't measure the blue/red shift of objects, since they are moving horizontally. I don't think the center of the galaxy being in the way has much to do with it.
tIs4gatorbait 10 months ago
Kind of gives you an idea on how insignificant we are.
jpr422 1 year ago
@jpr422
No, we are not insignificant. The Universe, et.al; may be large but that doesn't make mankind not count for something.
The entire Universe and God and Whatever has failed to explain itself / him-or-her self to everyone's satisfaction, so we are out there looking.
We are small relative to the Universe or God or Whatever yes, but we are not insignificant.
blardosplats 9 months ago
@blardosplats Are you talking in terms of our impact on the universe (or our understanding of it) and the world we live in?
jpr422 9 months ago
@jpr422
Yes.
blardosplats 9 months ago
Finally,someone that explains clearly the questions I raised in the 9th grade. My geography teacher was pretty much bored and could not wait to go for her coffee break,rather then sit down and explain.That was the main reason why I choose history over geography,I was fascinated about the stars, universe, and so on,but yeah..many teachers could not care less about what the student would like to learn...at least now after some years,I can pick up where I left off.
Nosferat23 1 year ago
It's just Literally Unthinkable.... Our TINY little brain would blow up if it ever tried to "get the picture"... Great video. Tnx
BlairSantos 1 year ago
anutha great video :}
archaedemos 1 year ago
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ratuliut 1 year ago
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ratuliut 1 year ago
Even after finishing this video, it takes couple of minutes to response....Simply there is no word to describe the size of this universe. What the hell!
ratuliut 1 year ago 14
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ratuliut 1 year ago
This is AMAZING!
I'm watching the whole "scale" series that your posting :D
very interesting and mind blowing
Th30Hacker 1 year ago 2
Sal, thanks for loading these up with scale comparisons and analogies. We are not equipped to appreciate the massively large and super-small without analogy. I wish you could bring a 3D animator onboard at the Khan Academy to assist with presentations like this (better visuals in this case would really serve to strengthen analogies and provide a nice smooth transition from one scale to the next.) Great stuff!
PopArt 1 year ago 2
did you mean to say that the grain of sand would be in comparison to the galaxy or the universe. I assume you meant galaxy??
MotoPayton 1 year ago
7:27 his mind blew up LOL
PlutonGB 1 year ago
Sal, you would be one of the most interesting people I can think of to talk to.
midnight9wanderer 1 year ago
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with all due respect when you say life has not been observed, we firstly have observed an UNIMAGINABLY small portion of the universe. this being said, considering the universe is in fact infinite i honestly think it is not only ignorant to assume we are the most advanced civilization in what we understand the universe to be. Do not get me wrong i am a firm believer in god but i also know that judging by pure odds life is abundant.
Roboklintworth 1 year ago
with all due respect when you say life has not been observed, we firstly have observed an UNIMAGINABLY small portion of the universe. this being said, considering the universe is in fact infinite i honestly think it is not only ignorant to assume we are the most advanced civilization in what we understand the universe to be. Do not get me wrong i am a firm believer in god but i also know that judging by pure odds life is abundant.
Roboklintworth 1 year ago
“By Heaven with its oscillating orbits” (Qu'ran Surat adh-Dhariyat, 7)
s980ful 1 year ago
And it is We Who have constructed the heaven with might, and it is We Who are steadily expanding it. (Qur'an, 51:47)
s980ful 1 year ago
ERROR: At 11:05 you compared the Oort cloud with the size of the Universe, you clearly meant the Galaxy hence 1mm ~ 100m.
If the Oort cloud = 1 light year = 1mm in diameter, and the visible Universe is 13.7 billion light years in radius (27.4 billion light year diameter), then on that scale the visible Universe would be 17,029 miles wide (2.1 times the diameter of Earth.
Neutrinoghost 1 year ago
why is this not in high school curriculum?
this should be basic science knowledge
007SPIDER007 1 year ago
@007SPIDER007
School is designed to make good workers, not to be interesting.
gr0mithtimon 1 year ago
@9:05 Supermassive Black Hoooole!
Iwantamansonguitar 1 year ago
why r u guys fighting aliens have a high percentage of existence there LOL
skyfaze 1 year ago
@DrFHead What hypocrisy dude? What the fuck are you talking about? I don't believe in alien life, I said that in my post. I believe in the possibility of alien life, which is something that many staunchly deny. You don't look like an ass, you are an ass, making up arguments without any reason whatsoever. I get it dude, you are one of those stubborn anti-aliens who don't even ponder about the possibility of their existence. If you felt insulted by my post, suck it up for being so narrow minded.
Ikus13 1 year ago
@DrFHead Nowhere in my post did I "authoritatively claim" there has to be intelligent life, especially without any proof. My criticism went to those who staunchly deny it, nothing more, nothing less. I do not believe in alien intelligent life, I believe in the possibility of its existence given the size of the Universe. Save your rant when it actually makes sense. Here you just ended up looking like a stupid ass.
Ikus13 1 year ago
This video really reminds me of the short movie: "Powers of Ten" which talks about relative sizes and distances in the universe like this khanacademy video. You guys should really Powers of Ten, thumbs up so people know. =D
redjr242 1 year ago
Great work sal I havn't watched any of your videos in a long time, but from watching these i'll make sure I check in more frequently =) , now you just need to explain the very small and most people will be set. Imagining a hydrogen atom as 1380000000000000000000 times smaller than a grain of sand is simply too difficult for me :( .
bradkey98765 1 year ago
Thank you, Sal! This is so awesome. Love astronomy,can listen to this stuff forever.....!!!!
arev1977 1 year ago
Khan makes me love learning :D
fob199 1 year ago
Te only thing to say, Allaho Akbar, Subhaaan Allah the designer of this piece we know of the universe we at least know about its existence.
And there are still people who worship their little brain.
zamarino 1 year ago
This reminds me of the final scene of Men in Black
Ribamaia 1 year ago 2
We're nothing, and we're just now starting to realize it.
JCarter3000 1 year ago
Mind=Blown
villagepunk 1 year ago 38
@villagepunk Literally.... ***(x_x)***
BlairSantos 1 year ago
Great vid - Thanks
You'll be familiar with this way of putting it too....
v=buqtdpuZxvk
zalida100 1 year ago
So would you say that there's a quasar in the Milky Way?
urbnplnr1234 1 year ago
even the biggest star is a tiny little grain of sand when it compares to a galaxy. and a galaxy is a tiny little grain of sand when it compares to the universe. and the universe is a tiny little grain of sand when it compares to _____.
rax7 1 year ago
very interesting, however i don't believe everything you said.
postmarvi 1 year ago
@postmarvi Thats not matter of a belief. Information presented here is a scientific FACT.
30LayersOfKevlar 1 year ago
@postmarvi What is it in this video not to believe?
ssmooerr 1 year ago
i never thought god could create all this by himself !!!!!!!!!!!!!
amcbirds 1 year ago
@amcbirds Guess what, he probably didn't. There are very solid explanations about the origin of galaxies, solar systems, planets etc.. A God fills very little use.
ssmooerr 1 year ago
NICE!!!!
Harrisoa 1 year ago
And this is nothing compared to the rest of the universe, in which there are billions more galaxies
guaranic 1 year ago
" I'm busy to contemplate infinity." (A yogis answer to the question, what he is doing all the time:)
norwayte 1 year ago
THanks for this video. One of the greatest problems confronting young learners is the scales involved in space, the atomic scale and geologic time.
drfoxcourt 1 year ago
Thank you for this video.
kirkjohnson212 1 year ago
This is so cool.
Satak8 1 year ago
Sal, I was thinking about the size and distances of stars yesterday morning (and it was pretty coincidental that you posted these videos a few hours later) and there is one little thing you may want to consider (it may help in blowing your mind, I don't know). Earth is traveling about 30,000 km/s. If you were to move 30,000km/s it would take about 40 years to get to Alpha Centouri. 4.2 light years is VERY far, but we manage to travel this far throughout our life span!
Melthornal 1 year ago
@Melthornal Actually, the Earth only travels at around 30 km/s.
maulcs 1 year ago
@maulcs Ah, thanks for the correction.
Melthornal 1 year ago
It's very frustrating to know that we won't be traveling to any other stars in our lifetimes. Or galaxies for that matter. Pisses me off.
maulcs 1 year ago
this is so awesome!
TeganES 1 year ago
yes
maulcs 1 year ago
And there are still idiots out there that authoritatively declare we're the only intelligent life in the Universe. I can't think of a more underestimated and often misused word than "Universe". It's simply unfathomable, yet people refer to it way too lightly.
Ikus13 1 year ago 33
@Ikus13 They may be right. The only position you can really take regarding life is purely agnostic. I am inclined to think it likely there is life elsewhere, but, in the absence of evidence, all that can be said is "I don't know". For example, if the chances of life arising were less than one in "The number of stars in the universe", i.e, under ordinary circumstances, spontaneous abiogenesis would be considered impossible, then a universe of this size would be needed to make it happen once.
ImposingSumo 1 year ago
@ImposingSumo I'm not saying that is the case, just that circumstantial evidence can be presented for both sides. None of which proves anything.
ImposingSumo 1 year ago
@ImposingSumo Agnostic would be to say "I cannot know", not "I do not know".
thisisnotanick 1 year ago
@thisisnotanick I disagree. I am agnostic about whether the cheese in my fridge has gone off, in that I presently don't know. However, once I have evidence one way or the other, i.e. I check by smelling the cheese, then I have become a 'Gonstic', that is, I have the knowledge of the state of the cheese in my fridge. An Agnostic says "I don't know". He makes no claim as to whether that knowledge is ultimately attainable. To claim such a thing would be to claim knowledge would it not?
ImposingSumo 1 year ago 5
@ImposingSumo this is correct. An agnostic does not lay claim to any knowledge, but an athiest is definitive in his or her's belief that "god does not exist"
zackboomer 1 year ago
@zackboomer No, atheism is the non-belief in a god, not the claim that there is no god. Theist means "one who believes in god" or "with god" and atheist means "not one who believes in god" or "not with god".That's all it is. No claim of no god is being made. Maybe you have heard atheists make the claim that there is no god, but that's not the same as atheism being that claim.
genobahamut1337 1 year ago
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zackboomer 1 year ago
@genobahamut1337 fair enough, but isn't "the position that there are no deities" saying concretely that "there is no god"?
zackboomer 1 year ago
@zackboomer As I said, it's not the position that there are no gods/deities. It is just simply not believing in them. Not believing does not mean believing against or that there are none. It means that you simply do not believe in them. It's like the ruling "not guilty" to borrow someone else's explanation. Not guilty doesn't mean innocent, it means that you don't have evidence to claim them to be guilty. Just the same, I have no reason to thing god is real. Doesn't mean I believe there is none.
genobahamut1337 1 year ago
@zackboomer Atheists doesn't either claim to have knowledge wherever God exists or not, an Atheist just lacks the belief in such a being.
And regarding other life in the universe.. I am confident there is other lifeforms out there.. We have only examined ONE life suitable (based on how life on earth works) and that very planet is sparking with life.. Imagine that there are trillion upon trillion of other planets out there.
ssmooerr 1 year ago
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@ssmooerr I have no doubt there are other civilizations out there
zackboomer 1 year ago
@zackboomer I don't know any atheists that would claim that. Atheism is, in a nutshell: "In the absence of evidence to support this supernatural theistic claim, I don't believe. If evidence is presented, I will change my belief".
ImposingSumo 1 year ago
@Ikus13 for some people, ignorance is bliss
zackboomer 1 year ago
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corianderthal 1 year ago
@Ikus13
You're right, and that intelligent life is called God
stainermcbain 1 year ago
@stainermcbain so you're saying that what many millions of people call 'God' are simply aliens? Did nicholas cage star in a movie that depicted this?
justinv3 1 year ago
@justinv3
No, I'm saying that humans are not the only intelligent life in the universe. God is intelligent, and He is most certainly alive, although not really in a biological sense, because He is spirit. There is no good reason to believe in life on other planets, because life cannot spontaneously appear; it has never been observed, and is scientifically impossible.
stainermcbain 1 year ago
@stainermcbain Dont you mean she?
JayDee98765 1 year ago
@Ikus13 You need jesus mate.
Jk.
JayDee98765 1 year ago
@Ikus13 Look up Sumerian artifacts. They knew the planets went around the sun and talked about people coming from the sky.
SuzLa1 1 year ago
@Ikus13 Do you know the odds of the right conditions for life to exist? Or life to evolve? Or a civilization species to evolve?
Sure there are aliens, at this very moment, there is an alien civilization right now, unfortunately due to odds, it's 100 million galaxies away.
Chnamanjx 1 year ago
@Chnamanjx
Recent studies that adjust the drake equation to what we presently know about our galaxy show that there could potentially be as many as 10 intelligent, broadcasting lifeforms in our galaxy alone.
hedonism13 1 year ago
@Chnamanjx
Nonsense. Whilst I can agree that any life is likely to be well and truly beyond our reach - even if we somehow reach Light speed travel (which isn't that likely if all even possible) - your claim that they will be 100 million galaxies away is totally baseless. Which is because the odds of life to exist on a planet are relatively unknown.
Those odds are always based on EARTH life, which has adapted TO EARTH. Therefore for other planets it could develop under different criteria.
Vire70 1 year ago
@Chnamanjx
And I'll go further to say that the number of planets within the habitable region (which is again generally restricted to what WE know as life, so the real region may widely contrast from what we think) is actually fairly high when you consider the sheer number of stars; it's even very likely there are many habitable planets of the right size in the right place, even within our galaxy. That doesn't guarantee life of course, but it does make your claimed odds nonsense.
Vire70 1 year ago
@Ikus13 maybe they should say it in a Deeper Voice for Emphasis. Just so they don't sound like they're taking it for Granted.
Destro7000 8 months ago
@Ikus13
Just because it's big and some call it 'Universal' doesn't mean that we aren't the only planet with intelligent life.
Some people just want scientific proof.
blardosplats 8 months ago
@Ikus13 The evidence is what will ultimately be authoritative concerning intelligent life in other star systems. Have you ever heard of the Fermi Paradox? Its interesting to read about.
PLURIC 7 months ago
@Ikus13 Declaring that there is life in the galaxy is almost as bad as declaring that there is not. I'm am all for hypotheses, but making claims without evidence to back it up, is just ignorant.
pwnmaster420000 7 months ago