Jupiter's moon Ganymede, is larger than the planet Mercury!
149
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
There are two golf balls sitting on the moon.
721
If two pieces of metal touch in space, they become permanently stuck together.
808
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
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221