It varies, but it is several tons per cubic centimeter - i.e., millions of times as dense as water.
A white dwarf is made up mostly of electrons and protons, while a neutron star is composed mostly of neutrons. Neutron stars are much denser and more massive than white dwarfs, with gravity strong enough to overcome electron degeneracy pressure. White dwarfs typically form from the remnants of low to medium mass stars, while neutron stars are created in supernova explosions of massive stars.
White dwarves have run out of fuel; therefore they have stopped producing energy, through nuclear fusion. Also, they are very small - smaller than planet Earth, while (for comparison) our Sun has 109 times the diameter of Earth; they are very dense (a cubic centimeter of white dwarf matter has a mass of several tons), and fairly hot - though, since they don't produce energy, they will gradually cool down.
The explosion of a dwarf star is called a nova or a supernova, depending on the type of dwarf star and the circumstances of the explosion. Novas are less powerful explosions caused by a white dwarf siphoning material from a companion star, while supernovas are much more energetic explosions that can occur in white dwarfs or other types of stars.
A white dwarf supernova occurs when a white dwarf star in a binary system accretes material from a companion star, causing it to exceed the Chandrasekhar limit (1.4 solar masses). The core then undergoes a runaway nuclear fusion reaction, leading to a catastrophic explosion that destroys the white dwarf.
It varies, but it is several tons per cubic centimeter - i.e., millions of times as dense as water.
precisely 6 feet tall and 1 quarter centimeter
white dwarf
A white dwarf is made up mostly of electrons and protons, while a neutron star is composed mostly of neutrons. Neutron stars are much denser and more massive than white dwarfs, with gravity strong enough to overcome electron degeneracy pressure. White dwarfs typically form from the remnants of low to medium mass stars, while neutron stars are created in supernova explosions of massive stars.
A brown dwarf.A brown dwarf.A brown dwarf.A brown dwarf.
White dwarves have run out of fuel; therefore they have stopped producing energy, through nuclear fusion. Also, they are very small - smaller than planet Earth, while (for comparison) our Sun has 109 times the diameter of Earth; they are very dense (a cubic centimeter of white dwarf matter has a mass of several tons), and fairly hot - though, since they don't produce energy, they will gradually cool down.
A teaspoon (5ml) of white dwarf material would weigh about 6,500,000 grams or just over 7 metric tons.
So far most dwarf planets are found in a ring of icy debris beyond the orbit of Neptune known as the "Kuiper Belt." Only one dwarf planet is recognized in the belt of dry material between Mars and Jupiter known as the asteroids. That dwarf is called Ceres.
A nova event occurs when a white dwarf in a binary system accepts material from a nearby companion star, causing a runaway nuclear fusion explosion on the surface of the white dwarf. This explosion results in a sudden increase in brightness that can last for several days to a few weeks.
A teaspoonful of white dwarf material on Earth would weigh millions of tons due to its incredibly dense nature. White dwarfs have masses comparable to the Sun but are compressed into a volume roughly the size of Earth, resulting in an immense weight for even a small amount of material.
The explosion of a dwarf star is called a nova or a supernova, depending on the type of dwarf star and the circumstances of the explosion. Novas are less powerful explosions caused by a white dwarf siphoning material from a companion star, while supernovas are much more energetic explosions that can occur in white dwarfs or other types of stars.
A white dwarf supernova occurs when a white dwarf star in a binary system accretes material from a companion star, causing it to exceed the Chandrasekhar limit (1.4 solar masses). The core then undergoes a runaway nuclear fusion reaction, leading to a catastrophic explosion that destroys the white dwarf.