How long does it take light from other stars to reach Earth?
The time taken light from a star is depend upon it's distance from Earth.
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!/