Distances in terms of the speed of light (c = 3.00 x 108 m/s)


Distance
m
light-time
Circumference of Earth
4.0x104
0.13 s
Earth to Moon
3.8x108 1.3 s
Earth to Sun
1.5x1011 500 s = 8.3 min
Earth to Pluto
5.8x1012 320 min = 5.3 h
Earth to Andromeda galaxy

2.2 Mly