There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The heart of an astronaut actually gets smaller when in outer space.
216
The earth travels through space at 660,000 miles per hour.
189
It 'snows' metal on Venus.
13
Today's top fuel dragsters take off with more force than the space shuttle.
120
Venus is the only planet that rotates clockwise.
310