As I have occasionally been accused of only being interested in defending the status quo as well as having a blind faith in the big bang and other well-tested theories, I thought I would throw this idea out there:
Cosmologist claims Universe may not be expanding : Nature News & Comment
An interesting idea, even if wrong...Christof Wetterich, a theoretical physicist at the University of Heidelberg in Germany, has devised a different cosmology in which the Universe is not expanding but the mass of everything has been increasing.
More here: [1303.6878] A Universe without expansion