Summer on Uranus lasts for 21 years.
358
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
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
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219