Q. Which is the second nearest star to the Earth after the Sun?

Explanation by: Mr. Dubey

The Sun is the closest star to Earth.

Proxima Centauri, which is part of the Alpha Centauri star system, is the second nearest star at a distance of 4.24 light-years from Earth.


Other Options Explained:

(A) Vega – A bright star in the Lyra constellation, much farther than Proxima Centauri.

(B) Sirius – The brightest star in the night sky, about 8.6 light-years away.

(D) Alpha Centauri – A star system that includes Proxima Centauri, but the two main stars (Alpha Centauri A & B) are farther than Proxima Centauri.


Thus, the correct answer is (C) Proxima Centauri.