Recent content by grichblix

I've looked at all the wikipedia articles on the accelerating universe, etc., as well as some other reading. From what I understand, the evidence that the expansion of the universe is accelerating are based on similar redshift measures as the expansion in the first place. Unless there is some...

I'm new to the Physics forum and thought I'd start with a couple of stupid questions. 1) How do we know that black holes are not stellar nuclei that have just collapsed to a volume less than their mass dependent Schwarzschild radius (the radius at which the speed of light is the escape...