Is it possible to create white dwarf matter on Earth?

A piece of a white dwarf would explode, because atoms would expand to their normal size. This would hold for outer layers of a neutron star, too. For inner parts of the neutron star, that's not quite clear, but that kind of matter would probably decay rapidly, also resulting in an explosion. read more

Depends on what you mean by white dwarf matter. White dwarfs are composed mainly of Carbon and Oxygen, but have very high masses, densities (a million times that of water) and pressures. Creating that much mass on Earth is out of the question. read more

White dwarf matter is about 200 000 times denser than the average piece of earth. In the first scenario the mass and high density of the inner core would result in unimaginably strong gravity, crushing the rest of the earth into a thin stain on the white dwarf core’s surface. read more