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
Pluto is smaller than Russia.
9
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
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 last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10