In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15