If two pieces of metal touch in space, they become permanently stuck together.
808
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
41% of the moon is not visible from earth at any time.
103
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
The sun puts out more power in 1 second than mankind has ever used within human existence.
14