Venus is the only planet that rotates clockwise.
310
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The Earth gets 100 tons heavier every day due to falling space dust.
673
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236