41% of the moon is not visible from earth at any time.
103
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Some asteroids have other asteroids orbiting them.
131
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
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5