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Old 4th July 2012, 03:27 PM   #143
RecoveringYuppy
Penultimate Amazing
 
Join Date: Nov 2006
Posts: 14,185
Originally Posted by Skeptic Ginger View Post
Are neutron stars the same density as black holes? (I know the BH has more mass unless it evaporates or whatever they do.)

Black holes = infinitely dense?
If you define density for a black hole as mass divided by volume enclosed by the event horizon then black holes have finite density. And they can come in a very wide variety of densities, including as low density as hydrogen gas here on Earth if they are very large black holes.

Both black holes and neutron stars come in a variety of masses. Though neutron stars are subject to more constraints that lead to a lesser range of mass and densities.
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