Cosmologist claims Universe may not be expanding – nature

In a paper posted on the arXiv preprint server1, 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. In particular, Wetterich says, the lack of a Big Bang singularity is a major will have a hard time winning everyone over to his interpretation. According to Afshordi, cosmologists envisage the Universe as expanding only because it is the most convenient interpretation of galaxies’ say that Wetterich’s interpretation could help to keep cosmologists from becoming entrenched in one way of thinking.

Source: www.nature.com