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
Astronauts get taller when they are in space.
224
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
It would take more than 150 years to drive a car to the sun.
569
Jupiter's moon Ganymede, is larger than the planet Mercury!
149