Sound doesn't travel in space.
255
Pluto is smaller than Russia.
9
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
It would take more than 150 years to drive a car to the sun.
569
Earth is the only planet in our solar system that's not named after a god or goddess.
17