Earth is the only planet in our solar system that's not named after a god or goddess.
17
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
41% of the moon is not visible from earth at any time.
103
The earth rotates more slowly on its axis in March than in September.
145
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
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82