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
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13