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
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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
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
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
It would take more than 150 years to drive a car to the sun.
569
Pluto is smaller than Russia.
9
The sun is 330,330 times larger than the earth!
190