Dana,
If some one were to refute the current belief that the universe is infact expanding at an accelerating rate, and they were trying to prove that it wasn't expanding, what type of study or experiments would they need to use?
I was reading a couple of articles recently that have shown that there may be evidence the universe is not expanding. The first argument was that the mass of atoms had increased over time and hence the redshifts that people had observed were in fact from atoms sizes increasing rather than from galaxies moving further apart.
The second article I read said that people found that the surface brightness of near and far galaxies were identical and hence this data was inconsistent with an expanding universe.
This is the second article:
http://www.sci-news.com/astronomy/sc...ing-01940.html
I guess the simplied question is this:
If I were to have a couple of scientists in my story trying to refute the expansion of the universe, What type of experiments could I have them conduct. And is there a way for them to use data obtained from observing Supernova type 1a explosions?