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
Jupiter is bigger than all the other planets combined.
254
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
It 'snows' metal on Venus.
13
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The earth travels through space at 660,000 miles per hour.
189
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82