Not all white dwarf stars have exactly the same density, but they come in range of about 10,000 to 10,000,000 grams per cubic centimeter. To give you a sense of just how dense that is, our sun has a density of about 1 gram per cubic centimeter, which is actually the same as water here on Earth.
Neutron stars are even more dense than white dwarfs, estimated at around 10,000,000,000,000 grams per cubic centimeter!
If you use the search feature of our Q and A website, you’ll find much more information about these types of stars and how they are formed.
Hope this helps,
(republished on 07/19/06)