Summer on Uranus lasts for 21 years.
358
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The earth travels through space at 660,000 miles per hour.
189
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The heart of an astronaut actually gets smaller when in outer space.
216
The Earth gets 100 tons heavier every day due to falling space dust.
673