The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
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
It would take more than 150 years to drive a car to the sun.
569
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The light hitting the earth right now is 30 thousand years old.
163