Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Summer on Uranus lasts for 21 years.
358