Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
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 heart of an astronaut actually gets smaller when in outer space.
216
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Only 55% of Americans know that the sun is a star.
986
It 'snows' metal on Venus.
13
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16