More than 20 million meteoroids enter Earth's atmosphere every day.
139
Venus is the only planet that rotates clockwise.
310
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Summer on Uranus lasts for 21 years.
358
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
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194