An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Today's top fuel dragsters take off with more force than the space shuttle.
120