Is the Universe Infinite?

Most recent answer: 08/06/2015

I constantly see discussions about the "size" of the universe. Why can't the universe be infinite in all directions? So there was a Big Bang - so what? Maybe that is just the universe in our proximity.
- Fred Baus (age 70)
Simpsonville SC USA

The universe may indeed be infinite in all directions. Maybe if someday more is understood about its origins that statement will get modified, but for now either finite or infinite are completely consistent with observations. When people talk about the size of the universe, they generally just mean the part within our horizon. The whole consistent mathematical object must be much bigger, otherwise there'd be some noticeable curvature in the part we see.

Mike W.

(published on 08/06/2015)

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