The population of the Earth has more than doubled since 1950.
151
Summer on Uranus lasts for 21 years.
358
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
11
The heart of an astronaut actually gets smaller when in outer space.
216
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194