Is The Universe Infinite?

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You might have heard someone say the universe is "flat" or is "infinite." What does that mean? More importantly, is it true? Do we know for sure? Find out in this installment of mind-melting physics.

But, even in a finite universe, do you still need infinity to explain the real world? Check out Looking Glass Universe's video to find out:
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VIDEO ANNOTATIONS/CARDS

Is Math the Language of the Universe?

How Far Away Is The Moon?
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HUGE THANK YOU TO THESE PATRONS:

** Andy Kirkham, Nikko Lai, Evgeny **
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SCIENCE ASYLUM STUFF

Support us on Patreon:

Advanced Theoretical Physics (eBook):

Merchandise:

More videos at:

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EXTRA INFO LINKS

Veritasium on Observable Universe:

MinutePhysics on Universe Size:

PBS SpaceTime on Cosmic Inflation:

Vlogbrothers "No Edge" Video:

Define Universe:

Cosmic Microwave Background:

General Relativity Stuff:

Topology:

Occam's Razor:

SEFD Raisin Galaxy Simulator:

Just For Fun:
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STARTER COMMENTS

Infinite? - john michael:

Infinite? - Spaskiba:

Infinite? - Pirate Persian:

Edge? - Anish Tiwari:

Edge? - PokemonTom09:

Flat? - Abhijit Ghogre:
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COMMENT RESPONSES

Moon Causing Tides - Antares:

Scale Distance to Stars - Kahandran:

FTL Travel - ThatMrTC:

Closer Moon Problems - Alexandro Ochoa:

Majora's Mask - Elliot Grey:

Moon Reflector - YouCanScienceIt:
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IMAGE CREDITS

Logo designed by: Ben Sharef

Stock Photos and Clipart
- or I made them myself...

Cosmic Microwave Background:

Planck Satellite:

Horsehead Nebula:

German Two-Handed Sword:

Majora's Mask:

Рекомендации по теме

Комментарии

Your animations are really good. I was amazed by the past light cone at about 2 minutes. Hats off to you sir :)

upandatom

Correction: The torus at 5:15 only has positive curvature on the outside half. The inside half has negative curvature. (I thought I had posted this correction ages ago, but based on recent comments I realized I had forgotten.)

ScienceAsylum

I'm not giving up on the doughnut universe. Its the only thing that truly explains why we see less mass in an expanding observable universe. Its being eaten.

joelcraig

This is a really, really high quality video, it's a shame you don't have a ton of subscribers. Wish you the best!

DTG

Looking Glass Universe brought me here, and I'm glad it did!

Excellent video, I'm gonna have to binge-watch all the rest now. :P

srpilha

Crazy Science tickles my neurons and makes me happy! I love this channel!!!!

jaybee

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frysause

Great videos, man! I just watched a whole bunch of them and a lot of things I didn’t quite understand seem a lot clearer to me now! Keep up the excellent work! Thank you!

filipebcs

The spacetime diagram was amazing, I can see a lot effort put into that few seconds of animation

ChompNom

Youtubers with this level of quality content deserves subscribers guys. Tell your friends. Subs matters!

bosonbreeder

Today is the 1st time I came across your presentation. I watched 4 of them & read the 1st 75 reviews of each. They all say the same thing and I AGREE. You are awesome!! Between your explanation & presentation I actually understood/learned a lot. Thank you.

rjhhopewell

This channel should be mandatory viewing to schools.

steeveedee

Amazing content!! We were able to get our hands upon the basics only during our high school let alone understand in such details. Kids would be served so much better with your videos. I have a little kid I’ll show your videos to.

kabir

Great animations, simple explanations, use of humor = fantastic videos

michaelsmith

4:25 SpaceTime Curvature Equation (FLRW Metric) : it's actually beautiful when slightly simplified!
6:15 That was exactly my reaction when I learned the Universe seems flat, even with our finest measurements!
I mean, we just need an infinitesimal deviation from 180°-triangles with significant confidence, and voilà, curvature! But probably not confirmed anytime soon!

chrismcgarry