More than 20 million meteoroids enter Earth's atmosphere every day.
139
41% of the moon is not visible from earth at any time.
103
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
The heart of an astronaut actually gets smaller when in outer space.
216