The heart of an astronaut actually gets smaller when in outer space.
216
Pluto is smaller than Russia.
9
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
It 'snows' metal on Venus.
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236