There are two golf balls sitting on the moon.
721
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
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
Some asteroids have other asteroids orbiting them.
131
41% of the moon is not visible from earth at any time.
103