There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The Earth gets 100 tons heavier every day due to falling space dust.
673
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
It would take more than 150 years to drive a car to the sun.
569
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5