There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82