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 earth rotates more slowly on its axis in March than in September.
145
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 earth is .02 degrees hotter during a full moon.
157
Sound doesn't travel in space.
255
Venus is the only planet that rotates clockwise.
310
Earth is the only planet in our solar system that's not named after a god or goddess.
17