Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
It 'snows' metal on Venus.
13
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Venus is the only planet that rotates clockwise.
310