In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
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
Sound doesn't travel in space.
255
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4
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