The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4
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
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
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