Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
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
Summer on Uranus lasts for 21 years.
358
It would take more than 150 years to drive a car to the sun.
569
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10