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What is a neutron star? Detailed answer

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What is a neutron star?

Neutron stars are formed as a result of the gravitational collapse of stars with a mass 1,5-2,5 times the mass of the Sun (if the mass of the star is greater, a black hole appears).

Inside a neutron star, free electrons and protons neutralize each other, forming neutrons and neutrinos, which stops the collapse. This process of "neutronization" continues until the main part of the star consists of neutrons.

The density of a neutron star is approximately a quintillion (billion billion) kilograms per cubic meter, which is greater than the density of an atomic nucleus. One cubic centimeter of neutron star matter would weigh about a billion tons on Earth.

It is precisely because of their enormous density that neutron stars are extremely compact: with a mass of about two solar masses, a neutron star has a radius of about 10 kilometers.

Author: Kondrashov A.P.

 Random interesting fact from the Great Encyclopedia:

How long will the most dangerous precipitation of the Chernobyl zone decay by half?

For quite a long time: strontium isotopes - for 28 years, cesium - for 30,2 years.

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