A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
There are two golf balls sitting on the moon.
721
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15