Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The heart of an astronaut actually gets smaller when in outer space.
216
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Only 55% of Americans know that the sun is a star.
986
There are two golf balls sitting on the moon.
721
Summer on Uranus lasts for 21 years.
358