There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
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
Venus is the only planet that rotates clockwise.
310
The sun is 330,330 times larger than the earth!
190
41% of the moon is not visible from earth at any time.
103
If two pieces of metal touch in space, they become permanently stuck together.
808
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
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