It 'snows' metal on Venus.
13
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Only 55% of Americans know that the sun is a star.
986
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The Earth gets 100 tons heavier every day due to falling space dust.
673
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The population of the Earth has more than doubled since 1950.
151