There are two golf balls sitting on the moon.
721
Sound doesn't travel in space.
255
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46