Question

How long does it take light from other stars to reach Earth?

Answer 1

The time taken light from a star is depend upon it's distance from Earth.

Explanation:

Liight travels 300,000 Km in one second through vacuum..So deepening upon the distance time varies.
Sun 8.2 minutes
Proxima century 4.2 years.
Sirius 8.3 years.
Andromeda galaxy 2.5 million years!/