Only 55% of Americans know that the sun is a star.
986
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 and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Some asteroids have other asteroids orbiting them.
131
It 'snows' metal on Venus.
13
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Buzz Aldrin’s mother’s maiden name was Moon.
9