Scale of solar system | Scale of the universe | Cosmology & Astronomy | Khan Academy

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  • Опубліковано 20 гру 2024

КОМЕНТАРІ • 207

  • @MrAwsome1337
    @MrAwsome1337 11 років тому +14

    You know it's amazing when sal ends with ".. Nevermind, this is starting to get crazy"

  • @hedonism13
    @hedonism13 14 років тому +2

    Did anyone else lol at Jesus' face just chilling to the side there? Sal planned to incorporate him, I think that's funny.

  • @br1an419
    @br1an419 13 років тому +2

    "This is starting to get crazy." is right. Thanks for posting these videos, Sal.

  • @btkw
    @btkw 14 років тому

    You need an astronomy playlist, seriously.

  • @Realdream17
    @Realdream17 9 років тому +16

    OMG! You are hilarious!!! When you added a picture of Jesus...omg!!! I cracked up laughing. This is a great video, thank you for talking about the scale of the Solar Systems in a very funny way! Props to you!

  • @ollinayato
    @ollinayato 13 років тому +2

    So if voyager is just now reaching Jesus, Can I send a hello yo him? Just kidding. Really insightful and thank you for posting this. So times when I stare at the stars, I can't help but get dizzy and find my self in awe at such a magnificent galaxy, let alone universe we all live in. So small, it's most humbling. I mean not to offend anyone, but as my opinion, God truly is a masterful creator. no artist that has ever lived could render such beauty.

  • @khanacademy
    @khanacademy  14 років тому

    @freeadplanet He's the most prominent person I could think of who lived ~2000 years ago. Didn't mean to offend anyone.

  • @Yora21
    @Yora21 12 років тому

    A scale model of the planets and distances of the solar system would actually be a really cool science project for primary school. You need an older brother or cousin to do the calculations for you, but making the small sphere from play doo and placing them at the right distances with a sign next to them along the entire side wall of the gym would be not that hard to do. ^^

  • @mutatron
    @mutatron 14 років тому +1

    @hifhif123 That's right. The name "Kuiper" comes from the Dutch, where "ui" is pronounced like German "ei". Here's what Wikipedia says: 'The Kuiper belt (pronounced /ˈkaɪpər/, rhyming with "viper")'.

  • @XsebT
    @XsebT 14 років тому

    I remember in 7th grade (Denmark) we made a trip out of trying to visualise these distances and sizes with balls and by counting steps. I was blown away by the scale of things.
    However, a funny thing to do afterward is to then look at a world map and realize that you barely moved at all. :)
    Thanks a lot for finally doing videos on cosmology. I've been waiting eagerly. :)

  • @werdnativ
    @werdnativ 14 років тому

    I did a science project with my daughter: If the sun were a basketball, the inner planets would be tiny grains at about 1m, 2m, 3m away. Jupiter would be a ping-pong ball 15m away. etc, until Pluto which would be smaller than a grain of sand at 118m away from the basketball... that's the length of the whole school!

  • @norwayte
    @norwayte 14 років тому

    Good. Better. Best. Sal.
    Handmade videos are less distracting. Any animation is distracting. Knowledge and a passionate voice is far more effective and efficient to learn something. Keep on going.

  • @SuzLa1
    @SuzLa1 10 років тому +1

    If you think how small we are and the length of our orbit, then we must be travelling really fast around the sun. Maybe getting some perspective of how fast we're moving could be another video lol.

  • @dianaasilva5
    @dianaasilva5 10 місяців тому

    best planet talk ever!

  • @PetrMac
    @PetrMac 13 років тому

    The lessons are really interesting. Thank you.
    I noticed that the picture, which shows all the planets in our solar system, Jupiter, Saturn, Uranus, etc. illuminates not the sun. From the sun why they are in the shadows and on the other hand, they have some reason to brighter:)

  • @Sedalb
    @Sedalb 13 років тому

    Very interesting video, I enjoy the information given in these lessons. I did feel as if half this video was repeating the notion of "mind-blowingly huge" concept of our solar system, which I appreciate being put into context but it gets old once it's repeated over and over again.

  • @deadreaper27
    @deadreaper27 13 років тому

    This is a really good video and i think that other children should be encouraged to watch it. :)

  • @Austin_Schulz
    @Austin_Schulz 10 років тому +1

    Pronunciations are KEY, Sal! :P

  • @werdnativ
    @werdnativ 14 років тому

    Are you familiar with Celestia? It's an amazing open-source astronomy simulation program. I love wandering around in there looking at the relationships between the movements of the solar system bodies; it gives a bit of a sense of what you're talking about here, in living animation.

  • @Barefootfam
    @Barefootfam 7 років тому +4

    [my sister]you wrote it just to erase it!?
    [me in super sirius voice]god writes lives just to erase them
    [my sis] [hyperventalating]
    [me] [laughing]

  • @aeroripper
    @aeroripper 13 років тому

    What is really humbling is realizing this massive distance is just ONE solar system orbiting ONE star. Keep zooming out and realize the Milky Way galaxy has 400+ BILLION stars with each likely having its own solar system. Then zoom out again and realize they're HUNDREDS of BILLIONS of galaxies in the known universe. That's just what we know with our current primitive technology. Our planet is not even a speck within these large scales and quantities. The Earth is all we have.

  • @tatfr0guy
    @tatfr0guy 13 років тому

    Sal begins talking in the third person at 8:50

  • @Armis71
    @Armis71 3 роки тому

    We use to live in a neighborhood where all the streets were named after planets and anything related to space. There's a street where to go in you neither go left to or right to it. You have to go straight to it. They named it Uranus. It was embarrassing to give directions to friends and relatives. I had to avoid saying it the wrong way. "Go straight inside Uranus. Go in Uranus. Towards Uranus," etc.

  • @ChazZen
    @ChazZen 14 років тому

    @MasterOhSo btw i posted 8 comments EXCLUDING this one-just to let u know incase u missed some, and second, ok it is cool u know the teleportation i was talking about but i meant that we can move objects such as a rock but we havent yet tried it on living things, we need to try on somehtng small like cockroach or something, just ot make sure. but they might of, it has been a while since i have re-searched it.

  • @MoreGore
    @MoreGore 13 років тому +1

    Excellent video, although I'm pretty sure "Kuiper" Belt is pronounced the same as "Hyper". I'm going to watch Distance to the closest star now :-)

  • @devinneil3914
    @devinneil3914 9 років тому +4

    The way he pronounces The Kuiper Belt is funny ^.^ lol

  • @Iwantamansonguitar
    @Iwantamansonguitar 14 років тому +1

    Haha you say "Queeper" instead of Kuiper. I think it's pronounced "Koyper" (It looks like a dutch name to me) :)
    And another thing: I used to mix up the order of the planets Saturn, Uranus and Neptune. But I found an easy way to remember it: Take the first letters of those planets, so you can form the word SUN. ;)

  • @thebeast49216
    @thebeast49216 4 роки тому

    What is that farthest object? Satner? Couldn't find it on Google

  • @davidwhite8489
    @davidwhite8489 10 років тому

    Great job! Really enjoy your videos and the perspective.

  • @Serratedmonkey4u
    @Serratedmonkey4u 12 років тому +1

    3:48

  • @SpinyNormanDinsdale
    @SpinyNormanDinsdale 14 років тому

    I never heard of an Oort cloud. That is some seriously incredible stuff!

  • @Stevesrssrssrs
    @Stevesrssrssrs 13 років тому

    You should talk about the Oort Cloud even farther (I believe) than the Kaiper Belt!

  • @emmanuelgutierrez6306
    @emmanuelgutierrez6306 12 років тому

    KHANACADEMY can you do a project and put a picture with the true distance of the solar system.

  • @Jotto999
    @Jotto999 13 років тому

    The universe is epic.

  • @ocdfreak
    @ocdfreak 13 років тому +1

    NASA's real reason for existing: Catch up with Jesus

  • @QadirPopal
    @QadirPopal 12 років тому

    Thanks and awesome!

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle I have read them all, and it's fine. It gave me something to do for a little while.

  • @ChazZen
    @ChazZen 14 років тому

    @MasterOhSo ok now, the teleportation device u r speaking of is one of the older teleportations, the new ones completely de-moleculize the object and in that 0.00647 seconds of de-moleculizing, approximatly 5 billion lazers scan every single atom in the area of teleportation ( each one having billions of atoms to scan each lazer) and then the lazers send signals to the place of teleportation that then reassemble the atoms according to the information, i only know the simple version

  • @ChazZen
    @ChazZen 14 років тому

    @MasterOhSo b4 i start i just wanna say u r probably the most decent person on youtube i hve ever debated with in my whole life

  • @dayveo
    @dayveo 10 років тому +1

    "just to give you a sense"

  • @Yora21
    @Yora21 12 років тому

    Oh no, I grossly miscalulated by the scale of 100. However, we have a bike and pedestrian road build on the bed of an old train track that goes in an almost straight line for about 2 kilometers. Make Earth 5mm in diameter, then that would be enough distance to acurately represent the distance of the planets up to neptune. For pluto, you would need 2 more kilometers.

  • @charlieangkor8649
    @charlieangkor8649 4 роки тому

    Now please tell me which way the Moon is flying around the Earth. In the same direction as the Earth is rotating? Or the other direction?

  • @SuzLa1
    @SuzLa1 13 років тому

    Why is it dark just because our planet is turned the other way? I can't get it into perspective that if the sun is so bright that can reach our Earth and make it so warm and light from so far away, wouldn't all around us have light from the sun too, even if the Earth is turned the other way?

  • @mrakun
    @mrakun 12 років тому

    Isn't it cool the same day I viewed this video I later heard on the news that Voyager is leaving the solar system?!

  • @jonasianbuddy
    @jonasianbuddy 14 років тому

    I remember watching a Bill Nye show at skool on this.

  • @CornerDealie
    @CornerDealie 13 років тому +1

    great video, love the scale explanations. I also love how you dont try and pronounce Uranus like a pretentious astronomer too afraid to say ANUS. thats the way it's pronounced people! it's basic phonics!!

  • @ChazZen
    @ChazZen 14 років тому

    @MasterOhSo thank u for listening and sorry for all the reponses but everything i was about to say was mostly from the video so why not just give u the video right, it might also correct some mistakes i might have done if i told u my self, please go look at it

  • @Rayden440
    @Rayden440 14 років тому

    @im2bits Yes, other planets are really far away. That's why we are having a lot of trouble getting to Mars because if there is a problem on Mars it would take chemical rockets 8-9 months to get there but with a VASIMR rocket we can get there in about 40 days. Not very good news for the astronauts. Not to mention that both Earth and Mars is moving, so there will be a time when it is closer and a time when it is very far away.

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle What way would that be? Last I checked, someone only came up with the idea of destroying someone on one side and then re-constructing them on the other. I've seen nothing that says we know how to accomplish this. Even if we did, though... yeah, I think I'd rather just walk.

  • @PLURIC
    @PLURIC 13 років тому

    Pluto is no longer a debated "planet", it has been classified as one of many Kuiper Belt objects ^_^

  • @happyflowers9870
    @happyflowers9870 4 роки тому

    Rewatching in 2020, where’s voyager now?

  • @werdnativ
    @werdnativ 14 років тому

    From that basketball model sun with the earth 1m away, the nearest star from us (near Vancouver) would be in Edmonton, some 800km away!

  • @Morzansdaughter
    @Morzansdaughter 12 років тому

    "Voyager would only just now be catching up with Jesus"
    I am amuuuused.

  • @chissstardestroyer
    @chissstardestroyer 4 роки тому

    Do we even know what that binary object or Sedna really is in its nature, Mr. Khan?

  • @Mrtyera1
    @Mrtyera1 12 років тому +2

    he sais kuiper belt just like my little brother pronouces creeper

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle Sure, we can send messages. It might even make the conversation easier to keep track of.

  • @SuzLa1
    @SuzLa1 13 років тому

    @Vire70 I thought we're going to collide with Andomeda because of the gravity attracting?

  • @Sukanyae1176
    @Sukanyae1176 3 роки тому

    8:40 now its 142 au

  • @esmanuraksu2495
    @esmanuraksu2495 4 роки тому

    03:00

  • @BlackBeardDelight187
    @BlackBeardDelight187 13 років тому

    @hedonism13 I sure did lol. I love this guy. We should change his name to sensei Khan.

  • @calebevans8527
    @calebevans8527 5 років тому

    How do astronomers know the distance between planets

  • @saeir
    @saeir 11 років тому

    thank you

  • @Vire70
    @Vire70 14 років тому

    @dalcde
    Because the sheer amount of space makes any collision unlikely. It is said that even if two galaxy's collided, as can be seen in simulations, none of the planets or suns would be likely to even touch one another - a few may, but the vast majority will simply pass by one another. Of course their orbits will be all messed up from gravity.. but that's another issue.

  • @SuzLa1
    @SuzLa1 13 років тому

    How come our telescopes can see through the asteroid belt and Oort cloud? If they can take images of deep space, why do they only speculate there's an Oort cloud?

  • @theprettygirl45
    @theprettygirl45 13 років тому

    I like how he says huge.

  • @Arcaani
    @Arcaani 14 років тому

    There is solace to be found in the tiny scale of our solar system. No matter how much the stupid people on Earth screw up, we still won't fuck up much, if anything, outside the atmosphere.

  • @ChazZen
    @ChazZen 14 років тому

    @genobahamut1337 that is basically all the stuff we thought was impossible and stuff but then when we accomplish it, it is amazing-like teleporting, or flying (well not really flying because we arent using the air to help us stay in the air) but flying the speed of light or traveling the speed of light, and u know some aliens-they cant make music out of their heads but we can-humans are amazing-GTG so i wont reply to ur other comments for a while

  • @Pizzachu1
    @Pizzachu1 13 років тому

    @SuzLa1 Space is really really empty. The sizes of things are extremely small compared to the distances between them. The asteroids in the asteroid belt are actually really far apart from each other. If you were on a trip to Jupiter, you'd probably never even see an asteroid unless you looked for one.

  • @TheJunkieBox
    @TheJunkieBox 14 років тому

    JESUS ON A PLANE!
    LMFAO

  • @alakatripathi9102
    @alakatripathi9102 4 роки тому

    Saturn will be 540 m rather than a kilometer away, nine times the distance from earth will be 60×9=540m away

  • @maulcs
    @maulcs 14 років тому

    More astronomy videos

  • @Svenskivsk
    @Svenskivsk 14 років тому

    @Shift4chizzle
    The Earth already has an electromagnetic force field its the reason we aren't irradiated right now and its called Earth's magnetic field. I also believe its more powerful than anything we can come up with.

  • @1GameataTime
    @1GameataTime 13 років тому

    So the sun is 1 AU away from us and Jupiter is about 4? I would think that with that scaling we wouldn't even be able to see Jupiter at night, and the sun would appear much larger for that to be correct. Hmm, guess I have alot to learn :D

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle Okay, but it seems to me that this isn't a very good secret if you, some guy on youtube, knows about it. I mean, the whole teleport thing being a little further advanced in theory is believable to me as I last checked on that years ago, but alien tech sounds a bit too far fetched. As for anti-gravity, I've actually been seeing stuff about that, and cold fusion. If your link does have secret tech, I hope it's better than that and I hope it makes sense. Otherwise, it could be crap.

  • @vibol03
    @vibol03 14 років тому

    i hope will find a way to teleport someday!

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle We already have an electromagnetic field around the earth... But what you're talking about is an EMP which can hit any space craft that isn't our own anywhere around the world. Wouldn't that be kinda war-like if these aliens are real?

  • @EsroTanosee
    @EsroTanosee 12 років тому

    WHAT ABOUT THE DEATH STAR????

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle I never once said what I think. I know that it is nearly impossible for there to not be other life out there. I never suggested that we were alone in the universe. All I said was that there is no proof that whatever life may be out there has found it's way here. There is a big difference between saying that and what you just tried to accuse me of suggesting.

  • @rolandmcmanis5722
    @rolandmcmanis5722 2 роки тому

    Rational laws govern the universe

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle I know there were more clones made, but that sheep was the closest thing to human cloning, I think. Something like that made it a big deal. As for the book thing, you should write a book. Even if it all turns out to be crap, you could make some money off of it.

  • @Kreighzey
    @Kreighzey 12 років тому

    Thumbs up if you tried to calculate his age at 7:00

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle Well, if you know about this technology, you could provide links to it. Personally, I only know about the news not paying attention to technology, but I have seen plenty of stuff online that talks about latest tech, and when people talk about better tech than this, they usually either don't have a source or don't have a very credible one. I do know about a lot of tech, and what you're saying doesn't surprise me at all as it seems feasible. Would like to see a good source, though.

  • @dynfo
    @dynfo 11 років тому

    Earth is within the asteriods which is within the Kuiper Belt which is surrounded by Oort cloud. Fuck the needle and the haystack, it should be 'it's like looking for Earth in the Oort Cloud'.

  • @goldstandardpersonalgrowth
    @goldstandardpersonalgrowth 12 років тому +1

    Lol. I think Sal lost a bet..someone dared him to incorporate Jesus into his next video tutorial if he lost. well he sure found a way thats relevant lol..
    That or he just revealed voyager's actual mission: to catch up with jesus who left on a plane 2000 years ago.

  • @ChazZen
    @ChazZen 14 років тому

    @genobahamut1337 and also i dont remember who it was, i think NASA, but they re testing one of eisteins theory of relativity out in space and if it works they are going to make and electromagnetic force field covering the entire entity of the earth, it does not affect the way it runs but it does immediatly shut down any craft that comes from out side to the inside of earth and the craft will then slowly fall to earth so that they can collect the pieces of the crafts to make their own

  • @cyberprodigy
    @cyberprodigy 14 років тому

    I doubt A.Linkoln would ever reach sun on a jet plane :).

  • @Phi1618033
    @Phi1618033 13 років тому

    Kuiper is pronounced K-EYE-Per. Not KWIPer. You should add a correction box, Sal.

  • @ChazZen
    @ChazZen 14 років тому

    @MasterOhSo ok i will give all the proof i can when i get back, but i need to know one thing-u want proof for that life isnt made by change or that teleportion is real?

  • @ChazZen
    @ChazZen 14 років тому

    @genobahamut1337 also, alien tech, we arent actually that far behind alien technology, and in the public world (not the secret technology we have) we have all the things we need on a technological basis to build something amazing that aliens have but we just need to put it all together, in the secret world-we have a lot of amazing technology. u know there is a field is science i dont know if u've heard of this but it is called WSFM (weird science and friggin magic) lol

  • @ChazZen
    @ChazZen 14 років тому

    @Chobonaru ok , as i said to the other guy, the gasses and chemicals that they thought were in the atmosphere at the time they thought amino stuff were formed by chance, did actually form this stuff which proved evolution, but then they realised they were wrong and the earth had different gasses and chemicals back then, so then they retested it with the correct gasses and no amino stuff were formed, infact not any life was formed from this test, just watch the entire video i sent the other guy

  • @ChazZen
    @ChazZen 14 років тому

    @genobahamut1337 yeah that is true, but by good i meant that they want to release the information but scared for their lives

  • @angelicliving
    @angelicliving Рік тому

    i'd just like to say that i was watching this at the library and laughed out loud when the jesus pic appeared on the screen

  • @wesselbindt
    @wesselbindt 14 років тому

    6:17 It's not pronounced kweeper. You've got the K and the "per" part right, but ui is pronounced a bit differently. It's quite hard to explain how to pronounce it in Dutch, but Americans usually pronounce it like K-eye-per, I believe.

  • @jacksfilmsiswhore7358
    @jacksfilmsiswhore7358 11 років тому

    You're missing Nibiru.

  • @ChazZen
    @ChazZen 14 років тому

    @genobahamut1337 we have soooo much tech that if u saw it (and if u believed in aliens) and someone showed u, u would think it is alien tech, but it is human, some tech wouldnt make sense because it seems so simple yet so complicated as well

  • @lucasoncin8602
    @lucasoncin8602 8 років тому +3

    please. use metric system -.-

    • @ThePremiumGamer
      @ThePremiumGamer 8 років тому

      yo, this video is 6 years old

    • @luongmaihunggia
      @luongmaihunggia 6 років тому

      PremiumGamerTV // PGTV so what? The metric system is even older than 6 years.

    • @docpossum2460
      @docpossum2460 6 років тому

      Sal is American.

  • @CaleebTalib
    @CaleebTalib 13 років тому

    5:00 lol

  • @nj_bars
    @nj_bars 9 років тому

    Lol...Jesus is being chased by the voyager and Christians still think he's coming back

  • @genobahamut1337
    @genobahamut1337 14 років тому

    @Shift4chizzle That's kind of a funny name for a field of science, and although I would like aliens to be real, I have seen absolutely nothing that proves their existence. The same can be said for alien technology, though I'm sure we are making things like flying saucers and the like.

  • @James1toknow
    @James1toknow 14 років тому

    @hifhif123 I thought it was kiperbelt! or am I wrong! pronounced Ki- per- belt.