14 Jan
2011
14 Jan
'11
6:35 p.m.
Forget the plate tectonics thing. One of the best books I have found RE cosmology is (somewhat dated but still relevant) "A Short History of the Universe" by Joseph Silk, Scientific American Library, 1994. It is proposed (and apparently observed) that the universe is expanding everywhere (i.e. between galaxies) but not locally (i.e. Earth or solar system). I do not understand the supposed non-linearity of the observed expansion. Is it that the scale is so different that local expansion is so small in comparison that it can be neglected. Can anyone clarify? Steve