The light hitting the earth right now is 30 thousand years old.
163
Jupiter is bigger than all the other planets combined.
254
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
NASA invented baby food as we know it today.
7
If two pieces of metal touch in space, they become permanently stuck together.
808
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9