The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
It 'snows' metal on Venus.
13
Jupiter is bigger than all the other planets combined.
254
Sound doesn't travel in space.
255
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18