Sound doesn't travel in space.
255
Pluto is smaller than Russia.
9
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
If two pieces of metal touch in space, they become permanently stuck together.
808
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
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
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7