Neutrinos occupy about 43% of the neutron mass, If the universe as a medium and large child, Neutrino accounted for 43% of total mass of the universe, It is the so-called "dark matter".

中微子占有中子质量的43％左右，如果把宇宙看成一个大中子，中微子则占宇宙总质量的43％，它就是所谓“暗物质”。

youdao

Each proton (or neutron) has about two thousand times the mass of an electron.

每一个中子或者质子的质量都是一个电子的两千倍。

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All the mass measurements that have been done to date of these neutron stars where you see the pulsations... all of them are very close to 1.4 solar mass.

对于这些中子星的，质量测量，你看到脉冲，所有的都很接近于。，1。4倍的太阳质量，对此有个很好的解释。

youdao

Depending on its initial mass, it might collapse to a compact hot star known as a white dwarf (when the star's mass is less than 1.4 times the mass of our sun) or to a neutron star (for stars 1.4 to about three times the mass of our sun) or to a black hole (for stars more massive than three times the mass of our sun).

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