If two pieces of metal touch in space, they become permanently stuck together.
808
41% of the moon is not visible from earth at any time.
103
It 'snows' metal on Venus.
13
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
It takes eight and a half minutes for light to get from the sun to earth.
159
Some asteroids have other asteroids orbiting them.
131
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82