An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
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
Jupiter is bigger than all the other planets combined.
254
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
It 'snows' metal on Venus.
13