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
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Astronauts get taller when they are in space.
224
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Astronauts cannot burp in space.
232
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121