How long does it take the sun's rays to reach Pluto?

02 October 2005

Share

Question

How long does it take the sun's rays to reach Pluto?

Answer

Pluto is about 6 billion kilometres away from the sun and light travels at 300 000 kilometres every second. To put that in perspective, if you stood on the equator with a torch and switched it on, in one second the light would travel round the earth at least six times. In other words, it's travelling about a billion kilometres every hour. That means that to get to Pluto, light will take about five and a half to six hours to get from the sun.

Comments

Add a comment