Using data from space telescopes and other instruments, astronomers, cosmologists, and astrophysicists are able to deduce and ...

How big is the universe ... of inflation comes into play. Now about two decades old, inflation entertains the idea that there is a kind of energy that causes space to expand.

For instance, just because the expanse of land in front of us looks flat all the way to the horizon does not mean the entire planet is flat. Likewise, the universe being made of self-replicating ...