Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
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
Jupiter is bigger than all the other planets combined.
254
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
The light hitting the earth right now is 30 thousand years old.
163
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
22
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15