Olbers' Paradox - Why Is The Night Sky Dark?

If there are an infinite amount of stars in the universe in an infinite amount of space, then why is the night sky dark and not brightly lit up?

In this video we look at Olbers' Paradox and compare his solution to what we now know about the universe.

Sources and additional reading:

Music:
"Dream Culture"
Licensed under Creative Commons: By Attribution 3.0

[Phatzoot]

once this channel gets goin and youtube recognise the quality and put u on recommended pages u'll be flying! such nicely made videos!

[itsputtz]

Hey man, I see you're just getting started with this channel. I think you're really good at this, and I think you should stick with it.

[alebuller]

This was so simple and so easy to understand, thank you! great job

[y__h]

This deserves more views. And you deserve more subs. Good luck!

[JustinEltoft]

You should also mention the Hubble deep field images. They picked a dark random spot of the sky and found a huge number of stars and galaxies.

[WildBluntHickok]

Reminds me of Douglas Adams talking about what infinity looks like. He said something along the lines of "look at the night sky, at the blackness between stars. You can see infinitely far because there is nothing to block your gaze in that direction, but there's also nothing to see there. Just infinitely distant nothingness."

[aadhityasriram]

Answer....
Universe is expanding
Light's speed is constant
There's actually more space than number of stars

[ujjawalsingh]

I hate how underrated this channel is..

[stenoch]

This is a great example of a very common misconception: treating infinity as a number. Infinity is a concept that can be imagined, neither concrete nor demonstrable. You can imagine abstract numbers that go on forever, but not physical objects. Neither stars, ping pong balls, nor Hydrogen atoms can exist to infinity.
You say, there are infinity ping pong balls (PPBs) in existence. But I look and see that there is room in my house for at least a dozen more. There must, then, only be infinity minus 12 PPBs in existence. As long as there is room for more, and as long as there is physical matter that has not yet been used to make more PPBs, we have not yet reached infinity. Try to manufacture an infinity of any physical object and you will eventually use up all matter, and all space, in the process. Anything less is not yet infinity.
So there.

[amlanguru]

I can't believe this channel isn't popular yet. I've been watching your videos and I can compare it to channels like Kurtzgesat without even thinking about it twice. The quality of animation is very good. Hope to see more paradox videos.

[TallSilentGuy]

Very interesting... but you're still not getting my liver.

[AyatAyat-mvbs]

So i'm trying to understand (correct if i'm wrong)
Olber's paradox proves That the univers is In fact finite
Becaus if it was Infinite there WILL BE an Infinite amount of stars forming which means the crowded stars WILL radiate Infinite amount of light
But That is only if there was finite space
So here is my question:if the univers is Infinite shoudn't there BE Infinite space and therefore stars WILL form In That space So there WILL BE no crowded stars and the explination would work if the univers is finite or infinite

[ScienceFan]

This was /is an arguement against the “steady state model”....it kinda nudged us towards big bang / inflationary model which solves olber’s paradox. Yay for science!

[theneoreformationist]

Even if there were an infinite number of stars evenly distributed, the light dims faster than it adds together, meaning that infinite stars infinitely far away will never be as bright as a closer, smaller star cluster.

[lovetownsend]

Something that always blows my mind is, if you look around, up, down, left, right, all around in every direction, you've just looked in every direction of the entire universe lol

[MindfulThinks]

Your graphics! They're so clean!!!

[yoursleepparalysisdemon]

Watched 20 seconds:
There isn’t infinite stars or space. It’s called the *observable* universe. It’s expanding faster than light so we see less and less strays. We literally can’t see more than a set amount. We don’t know how big it is after that.
Edit: spelling

[witbyy]

how is this a paradox, where you see black theres a star there yes just far enough you cant see it

[CalvinHikes]

I don't love that this is called a paradox. And I don't love the explanation.

[WinterNox]

1:05 Alright this animation and their expressions are just too cute