Mars had an oxygen-rich atmosphere around 4 billion years ago
13
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
It would take more than 150 years to drive a car to the sun.
569
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Sound doesn't travel in space.
255