Sound doesn't travel in space.
255
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
The earth is .02 degrees hotter during a full moon.
157
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124