Friday, April 15, 2011

How fast does light travel from the Sun to each of the planets

Light travels at a speed of 299,792 kilometers per second; 186,287 miles per second. It takes 499.0 seconds for light to travel from the Sun to the Earth, a distance called 1 Astronomical Unit. Below is the light travel times from the Sun to each planet:

Planet                 Distance in AU                            Travel time





Mercury                 0.387                                      193.0 seconds or 3.2 minutes


Venus                    0.723                                      360.0 seconds or 6.0 minutes


Earth                     1.000                                       499.0 seconds or 8.3 minutes


Mars                    1.523                                        759.9 seconds or 12.6 minutes


Jupiter                  5.203                                       2595.0 seconds or 43.2 minutes


Saturn                  9.538                                       4759.0 seconds or 79.3 minutes


Uranus               19.819                                      9575.0 seconds or 159.6 minutes


Neptune            30.058                                    14998.0 seconds or 4.1 hours


Pluto                 39.44                                      19680.0 seconds or 5.5 hours


 
(Source)





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