There are more nerve cells in the human brain than there are stars in the Milky Way.
349
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
A comet's tail always points away from the sun.
2
From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
22
Sound doesn't travel in space.
255
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14