The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Sound doesn't travel in space.
255
The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
11
Earth is the only planet in our solar system that's not named after a god or goddess.
17
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
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