If two pieces of metal touch in space, they become permanently stuck together.
808
The light hitting the earth right now is 30 thousand years old.
163
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
Jupiter is bigger than all the other planets combined.
254
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6