Question

The brightest star visible from the earth is:

• A. Proxima Centauri
• B. Sirius
• C. Pole Star
• D. None of the above

Answer 1

The correct option is B

Sirius

The explanation for the correct option:

B: Sirius

1. The brightest star which is visible from the earth is Sirius.
2. It is 8.7 light-years away from the earth.

The explanation for the incorrect option(s):

C: Pole star

1. It is a star that can be seen in the north direction.
2. Its location is along the rotational axis of the earth therefore it appears stationary.

A: Proxima Centauri

1. 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.

Hence, option B is correct.