I think a good background for this month's theme might be provided by a visit to
Baudrunner's Space wherein I have posted a few short articles on this very subject. A site search for
expanding Universe produces this link:
a collection of discussions which deal with the concept of the expanding Universe.
I received a favorable email response from Brian Schmidt, the renowned Australian astronomer and primary recipient of the Gruber Prize for Astronomy for his proof of the
accelerating expanding Universe, when I pointed out that reality might very well be an illusion, provable by a simple demonstration using an elastic band, a ruler, and a ball-point pen.
It should be noted that physicists and astronomers are like doctors: no doctor or medicine actually promises a cure for anything, that the objective of medical treatment is only to alleviate suffering. Likewise, the jury is still out, and might be forever, on the subject of the fundamental nature of reality and of creation.