Simply, neutron star is a big nuclear - of 10km radius and solar mass (mass density about 1017- 1018 kg/m3). The material in a white dwarf is supported by electron degeneracy pressure. The physics of degeneracy yields a maximum mass for a non-rotating white dwarf, the Chandrasekhar limit-approximately 1.4 solar masses-beyond which it cannot be supported by electron degeneracy pressure. The density of white dwarf is - 109 kg/m3. So its radius is much bigger 10km, but the mass can be less, as well as bigger of solar mass.
A cold dead star is called a white dwarf. It is formed when a star has exhausted its nuclear fuel and collapsed under gravity, shrinking to a small, dense, and dim object.
Main sequence stars are bigger.
YES. A typical white dwarf star is only a bit bigger than the Earth.
The bigger star is typically referred to as the one with a higher mass. Size can vary, but mass is a good indicator of a star's overall size and brightness.
"Stellar masses" is not a unit of mass - perhaps you mean "solar masses". Depending on the remaining mass - after the supernova explosion - either a neutron star or a black hole. In the case of four stellar masses, probably a neutron star; it would require a more massive star than that to become a black hole.
A cold dead star is called a white dwarf. It is formed when a star has exhausted its nuclear fuel and collapsed under gravity, shrinking to a small, dense, and dim object.
No, Pluto is a Drawf Planet.
Yes.
The key to kokomo toys is made of a burned out drawf star that only Thomas O'Mahony can lift... because he's a drawf.
Main sequence stars are bigger.
A white dwarf is much larger than a neutron star.
Generally, they are not much bigger than the Earth.
Any star a little bigger than our own Sun (~1 -> 2 times).
YES. A typical white dwarf star is only a bit bigger than the Earth.
The obvious reason is that the specific star has bigger density compared with the Sun. For example, that star could be a "white dwarf star". A white dwarf mostly contains "electron degenerate matter", which is very dense. A white dwarf is a small dense star.
Star
it depends on the mass. If the star is small and it dies then it will turn into a red giant then a white dwarf. But if the star has enough mass and is bigger than any other star then it will collapse and turn into a black hole.