Jupiter's moon Ganymede, is larger than the planet Mercury!
149
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
A comet's tail always points away from the sun.
2
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219