What Is The Shape of Space? (ft. PhD Comics)

MinutePhysics is on twitter - @minutephysics

This video is about the local and global geometry and curvature of space and spacetime, aka, is space flat? Negatively curved? Positively curved? etc.

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Created by Henry Reich

[mmeses]

Flat earthers after watching this video: the universe is *round*

[Inoka]

But if the universe is expanding, doesn't that mean that the density of atoms in a given space decreases? Will the universe one day be much more concave than it is today?

[azdgariarada]

Great, now we have to worry about flat spacers.

[UnboundSpirit]

*Perfectly balanced. As all things should be*

[agr.]

This video is so wrong, the correct term for negative curvature is "pringle"

[JohnSix]

HA TAKE THAT ROUND SPACERS

- Flat Spacers

[Drizzle]

What if the universe is so big that we cannot detect the curvature

[aayushh]

1:01 can you see grey dots on intersection of

[feynstein]

PBS Space Time, Physics Videos by Eugene Khutoryansky and minutephysics on the same day? Hell yeah.

[fawzibriedj]

But as the universe is expanding, this density should change constantly, right ?

so a few billion years ago, it was not flat - because the density of the universe was higher - and a few billion years later, it won't be flat anymore ?

If this is the case, it's strange that I've never heard this reasoning before.

[zcb]

When even the universe is able to do cartwheel but you youre still unable to

[suwuliu]

but when the space is curved, wouldn't our measure tools also curved to a same degree so that we can't tell?

[MattFyrm]

But if space is expanding wouldn't that mean that density would be declining as the volume increases and mass stays the same?

[Badwater]

"Cosmic hyper-potato." The best space name ever!

[tori]

1:02 "There's only one shape space can be..."

Me: A potato!!?

Video: "...a giant hyperspace potato."

Me: HOLY CRAP I GOT IT RIGHT!!! *Subs*

[secondsuccess]

I'm just going to remain blissfully ignorant and pretend space is a hyperbolic potato. Neat video though.

[tonybell]

I love Daniel and Jorge Explain the Universe! Didn’t know I’d catch them here too

[Benseven]

The Flat Earthers are going to love this video. They may ask how can we have a round earth in flat space? So if space is flat the earth must be too 😳 😂😂😂

[frameschubser]

Wanna know what else is flat? That joke at the end

[cosmoshivani]

I love every second of this video. Beautifully written and described.