Hubble Image of Galaxies

[beastdude]

i had a thought, as we're looking back in time the further we look is it possible that the actual amount of galaxies we see are far less than is in the picture. like for eg we see say 1000 galaxies, but actually it's only 100 just that we're seeing the same 100 at different times of it's life. and having said that how comes we don't see 'trails' or 'snakes' of light where these galaxies have been.

[dissturbbed]

@beastdude Your not seeing the same galaxies at different times your seeing different galaxies at the same time. The galaxies farthest away from us that are dimmer in the photo are actually older today than the galaxies near us. You will not see trails of light in the exposed Hubble photo because they are moving too slow for you to notice.

[falubii]

@beastdude The speed of light is constant, so we can't have light from the same object hitting us at different times.

[numbchucking]

Sal, thank you so much for your hard work man. You're an excellent lecturer, congrats on your ongoing and continual success

[morethanlyf1]

wow, those are cool galaxies. thanks!:)

[bamiles84]

2 people are racist against galaxies.

[adgsTV]

That is a galaxy.

That is a galaxy.

That is a galaxy.

That is a galaxy.

[Jwest720]

How do people look out into the night sky and still think God is responsible for all this?

[nils4545]

@Jwest720 Because nothing disproves it. Religion however, that's another thing.

[bamiles84]

@Jwest720 ... how could you think it was all just a random accident?

[WorriedMitchell]

The government damn well better not decide to scratch funding for the James Webb Space Telescope.

[tviksas]

Ooh check out that one!

Shes one HOT galaxy!

[yamenhawit]

"The whole point of this video is really just to blow your mind!" -- Love it (it worked)

[leedsrhinos3201]

i want ppl to go to these galaxies

[kingpranw141180]

gr8t vids kepp them cuming

[holychrist24]

@zenoparodie i just find it so just WOW :D :P !

[lucidaable]

One word - awesome!

[holychrist24]

To think that in our 1 galaxy has life on one planet and if there are like millions of other galaxies out there, there is obviously life somewhere else its amazing !! :P

[zenoparodie]

@holychrist24 there are 100 billion galaxies in the observable universe :P

[sootyandteddy]

The 1 dislike must of been an alien that got left on earth.Must be lost. lol

[Uniztone]

How in the world would some of the theoretical space travelers find our planet in the milky way...and then come and do a fly by..they must be contained here already!

[LaPersonaNonGrata]

What is everything, and what is out there. We're a speck of dust on an island(Milky Way Galaxy) amongst hundreds of billions of islands out there - the Universe is an archipelago of Galaxies.

[GolliwoggMusic]

This makes Golliwogg's head spin.

[bbvibrabb]

Also this image shows what these galaxies looked like several billion years ago cause it takes light from those stars that long to reach us. We are looking into the past which is amazing

[derbigpr500]

@bbvibrabb Yea. If you look at this image in google in some crazy high resolution like 12000 x 12000 pixels, you can actually see that galaxies that are futher away are less "evolved", more messy and less dense, they're still in early stages of their development. And galaxies closer to us on that picture are more developed, nice and spiral.

[vicksoma]

Sal really missed something in this video, the only stars in the photograph are the points of light with a "plus sign" of light shining from it. EVERY OTHER POINT on the picture is an entire galaxy.

[artashes999]

3:45 "look at.. that's..... that's... that's a nice looking galaxy right there" lol. Did his wife watch this vid?

[wirednotice]

this dude is seriously geeking out haha

[dewijones92]

i watch this series of videos for fun :D

[Shaunt1]

This is one of m favorite pictures too I used it on my background.

[econguy87]

Hahah "That's a nice looking galaxy right there"

It sure is Sal!

[maulcs]

It's weird that you are circling certain galaxies. 99% of those specks are galaxies.

[DeluxeWarPlaya]

Least dense with instruction but most dense with inspiration

[warrenlaurde]

one of your best

[lucasmontec]

imagine how much intelligent life out there!

[Ady00pk]

@lucasmontec imagine how many people belive that we are alone in this universe:|

[MistaFrista]

The Hubbles needs to go all CSI on the sky's ass and reveal all its secrets

KEEP ON ZOOMING HORATIO! ZOOM AND ENHANCE!

[bradkey98765]

The bottom half of this image is now my desctop background :)

[moali68]

Nice, but all of the bright clusters that are visible at such a distance would more than likely be galaxies as well. Every little swirl.

[f3989]

I liked the part where he circled another galaxy.

[metabog]

Lmao, I was waiting for you to start sobbing uncontrollably while circling the galaxies.

[Hexonip]

"The point of this really... is to blow your mind."

Awesome, I love these videos.

[homousios]

I am waiting to see images from the James Webb Telescope. It probably even more breath taking than this one

[asseeninYOURDREAMS]

if one of those things was a nearby star it would bent the light from the galaxies.... they dont seem to be distorted ...

[MrFFSMAN]

amazing 

[Taheki]

Sal you missed one of the galaxies

[Lucuskane]

@Taheki You made my day with that joke. I think he missed the one on the left too.

[FHomeBrew]

After this video, Sal spent the rest of the day circling galaxies.

Imagine if those lines Sal draws in the pictures appear in reality around those galaxies at the same rate/speed. Each circle is thicker than most of the stuff that's in the encircled galaxy.

[kvn89]

and people still think earth is the only planet with life...hahaha

[zackboomer]

makes all of us seem so small and insignificant

[maulcs]

@zackboomer But then again, without something to observe the universe, could it even "exist"? How would time exist? What would observe time and change? Don't get that confused with the typical "tree falling in the woods" example as it's entirely different. Without a reference point, the entire evolution of the universe, all time, would simply pass in an instant. Perhaps we aren't so insignificant afterall.

[zackboomer]

@maulcs Time is a creation of man. It existed before us, and we simply give a name and quantity to it. As well, the universe would obviously exist without us to observe, because it existed before our species, and will continue exist after our species.

[maulcs]

@zackboomer In what context will it exist without something to observe it? What would a billion years be to a universe without consciousness? What would anything be without something to observe the passage of time?

[zackboomer]

@maulcs it seems that you are focused more on the philosophy aspect of the question. Even just focusing on Earth, which has been around for roughly 4.54 billion years - the Earth still existed for billions of years before we were around to record its history, yet we are aware of and have knowledge of the times before us. Unless you are thinking about some sort of "higher power" or even another civilization that watched over our planet until we came along, then the earth still existed without

[zackboomer]

@maulcs anyone to contemplate its existance

[maulcs]

@zackboomer I'm focusing on a practical issue. I used to think in the exact same way as you do, but you have to think broadly about what time is, and how we observe it. When you think of the universe "existing" without consciousness, you are still thinking about it from a perspective of some conscious being. Time passes for an observer in some way. What if you remove that observer? "Time" would be instantaneous. *snap* It's over, done.

[bradkey98765]

@zackboomer Oh no this doesn't make me feel insignificant, the ability to perceive a condensed image of somthing of unimaginable scale is undoutably a very special gift, sure it is most likly shared with other beings within the universe but as a percentage of all large clumps of matter in the universe I'd estimate aproximatly 0% of them have such abilities.

[Judicial78]

@zackboomer Small yes. Insignificant no, because what significance would the universe have without observers?

[PartVIII]

Thank you so much Sal

[zalida100]

Sal, these vids are great - Thanks very much for making all of them.

Could you consider using a bigger cursor so it is easier to see where you are pointing on screen. That small cursor you use is difficult to see. i have seen you use an arrow-shaped cursor before that is easier to see.

Great stuff - Thanks

[Techra]

wonder-ful. you should mention how it was Hubble who basically identified the first galaxy. what a mind-expanding realization that must have been for him and everyone else at the time. and that wasn't even 100 years ago

[pxxner]

every single blip on that image is a galaxy.

[silencedfable]

Definitely sweet.

[joshuarawr]

Unbelievable.. Hahah.. Definitely inspirational. Thanks for this ;)

[95TurboSol]

Makes you wonder if they're are people in some of those galaxies wondering if they're is intelligent life elsewhere in the universe lol.

[dilibau]

Khan I haz cheeze? :D

[Rawrishable]

We have so much left to explore, the possibilities are amazing and endless. Our world may seem large to us, but the scale and magnitude of everything around it- so hard to fathom.

[Rawrishable]

Thank you so much for making these videos! You help me so much through college! PLEASE dont ever stop!