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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
It 'snows' metal on Venus.
13
Pluto is smaller than Russia.
9
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Mars had an oxygen-rich atmosphere around 4 billion years ago
13