All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Pluto is smaller than Russia.
9
The heart of an astronaut actually gets smaller when in outer space.
216
Only 55% of Americans know that the sun is a star.
986
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
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
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121