How long does it take for light to travel from the sun to Pluto?
It takes about 8 minutes for light to reach Earth and over FIVE hours for the same light beam to reach Pluto, the farthest known (dwarf) planet in our solar system. At its closest point to Earth, Pluto is about 4.38 billion kilometres away.
How old is the light we see from the sun?
between 10,000 and 170,000 years
How long does it take for light to travel around the Earth?
In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second. Early scientists, unable to perceive light’s motion, thought it must travel instantaneously.
How do you calculate how long light takes to travel?
Time required for light to travel from sun to earth –