Summer on Uranus lasts for 21 years.
358
Venus is the only planet that rotates clockwise.
310
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The population of the Earth has more than doubled since 1950.
151
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Astronauts cannot burp in space.
232