en.wikipedia.org/wiki/Universe

The Universe is all of space and time (spacetime) and its contents, which includes planets, ...... Conversely, if k is zero or negative, the Universe has infinite volume. It may seem counter-intuitive that an infinite and yet infinitely dense Universe ...

www.npr.org/2016/12/27/507063437/is-the-universe-infinite

Dec 27, 2016 ... Morning Edition is asking questions about the universe, part of an effort to put things in perspective. We hear from scientists who ponder what ...

curious.astro.cornell.edu/physics/105-the-universe/cosmology-and-the-big-bang/our-place-in-the-universe/635-if-the-universe-is-infinite-does-that-mean-there-is-an-infinite-number-of-me-s-intermediate

If the universe goes on in all possible directions, and in an infinite distance, then wouldn't that mean that there would have to be more planets out there (another ...

www.universetoday.com/119553/is-the-universe-finite-or-infinite

Mar 26, 2015 ... Two possiblities exist: either the Universe is finite and has a size, or it's infinite and goes on forever. Both possibilities have mind-bending ...

www.esa.int/Our_Activities/Space_Science/People/Is_the_Universe_finite_or_infinite_An_interview_with_Joseph_Silk

Here he clarifies the concept of 'flatness', and explains why we may never get to know whether the Universe is finite or infinite. British astronomer Joseph Silk.

www.forbes.com/sites/startswithabang/2016/11/05/ask-ethan-could-the-universe-be-infinite

Nov 5, 2016 ... The Universe as we know it began with the Big Bang some 13.8 billion years ago . But that doesn't mean it isn't infinite.

www.quora.com/Is-our-universe-finite-or-infinite

It is impossible to know for sure if the universe is truly infinite. The observable universe is definitely finite - it is that part of the universe which is within 13.80 ...

www.skyandtelescope.com/astronomy-resources/universe-infinite-big-universe

Aug 7, 2014 ... But a spatially flat universe can be characteristic of either a finite or an infinite universe. When we say that space is “flat,” we mean it obeys ...