The light hitting the earth right now is 30 thousand years old.
163
If two pieces of metal touch in space, they become permanently stuck together.
808
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
NASA invented baby food as we know it today.
7