It 'snows' metal on Venus.
13
Only 55% of Americans know that the sun is a star.
986
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Pluto is smaller than Russia.
9
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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 moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
