Question

How far is the nearest star to earth in light years?

Answer 1

Hint: It has been estimated that there are approximately one billion stars in our Milky way. Stars are made up of helium and hydrogen and appear to be twinkling in the night sky.

Complete answer: The Proxima Centauri belongs to the Alpha Centauri star system. It is the triple-star system which is about 4.37 light-years away. Proxima Centauri is 4.24 light-years away.
Out of all the stars which are closer than 15 light-years, only two of them are spectral type G, identical to our sun: Alpha Centauri A and Tau Ceti. M-type red dwarf stars are the majority type.
In this entire star system, only nine of them are luminous enough to be observed by the naked human eye from the Earth.

Note: -Barnard’s Star is a red dwarf star which is 5.96 light-years away and has the biggest adequate movement of any known star. This implies that it moves instantly against the environment of more distant stars, at a rate of 10.3 seconds of arc per Earth year.
-Sirius A is the brightest star in Earth’s night sky. This is due to its inherent illumination and its nearness to us. Sirius B is a white dwarf star which is smaller as compared to the Earth but has a mass that is 98 percent that of our sun.