Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Jupiter is bigger than all the other planets combined.
254
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
It 'snows' metal on Venus.
13
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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6