Question

Name the nearest star from the earth and its distance in kilometers.

Answer 1

Proxima Centauri:

1. Proxima Centauri: It is the nearest star from the earth.
2. It is 4.3 light-years from the earth.
3. It means light takes 4.3 years to reach earth from Proxima Centauri.
4. As we know one light-year is the distance that is traveled by the light in one year.
5. One light-year is equal to $9.46\times {10}^{12}kilometers.$
6. Hence proximal Centauri is $4.3\times 9.46\times {10}^{12}=40.67\times {10}^{12}kilometers$ away from the earth.