Buzz Aldrin’s mother’s maiden name was Moon.
9
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6