Sound doesn't travel in space.
255
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
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
Earth is the only planet in our solar system that's not named after a god or goddess.
17
There are more nerve cells in the human brain than there are stars in the Milky Way.
349