Only 55% of Americans know that the sun is a star.
986
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
The sun is 330,330 times larger than the earth!
190
The earth rotates more slowly on its axis in March than in September.
145
Sound doesn't travel in space.
255
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219