Summer on Uranus lasts for 21 years.
358
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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
Pluto is smaller than Russia.
9
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219