The population of the Earth has more than doubled since 1950.
151
There are two golf balls sitting on the moon.
721
Buzz Aldrin’s mother’s maiden name was Moon.
9
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
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
41% of the moon is not visible from earth at any time.
103
The heart of an astronaut actually gets smaller when in outer space.
216