Universe Infinity Debate

The cluster revolves around debates on whether the universe is finite or infinite, distinguishing the observable finite portion from the potentially infinite whole, and exploring implications like infinite matter, gravity, and expansion.

📉 Falling 0.3x Science
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Keywords

youtube.com ycombinator.com wikipedia.org i.e universe infinite finite observable heat death infinity space homogeneous black hole

Sample Comments

sorenbs Oct 23, 2011 View on HN

Not if the universe is infinite i suppose?

randerson May 10, 2021 View on HN

Isn't the universe potentially infinite?

Triv888 Dec 22, 2020 View on HN

An infinite Universe makes the most sense, let's adopt that

sillysaurus3 Jul 4, 2017 View on HN

That's likely our observable portion of the infinite universe. It doesn't mean the universe is finite.

thatcat Oct 25, 2025 View on HN

Wouldn't that be infinite universe theory?

colanderman Oct 14, 2018 View on HN

Why would an infinite universe necessarily contain infinite matter?

drpixie Apr 14, 2024 View on HN

Sounds like the start of a proof by contradiction that the universe is not infinite, merely very, very, very large :)

vivzkestrel Apr 19, 2024 View on HN

How would you determine if the Universe is finite or infinite?

voidUpdate Apr 22, 2025 View on HN

It's only been a finite time since the universe was very small, so unless it's expanding infinitely fast, I don't see how it could be infinite

wlievens Dec 10, 2007 View on HN

The universe isn't infinite. If that'd be the case, there'd be infinite matter, and therefore infinite gravity, and we'd all be reduced to black hole singularities :-)