Astronauts cannot burp in space.
232
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
Pluto is smaller than Russia.
9
Sound doesn't travel in space.
255
Jupiter is bigger than all the other planets combined.
254
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118