Venus is the only planet that rotates clockwise.
310
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
It 'snows' metal on Venus.
13
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
Sound doesn't travel in space.
255
A comet's tail always points away from the sun.
2