There are two golf balls sitting on the moon.
721
41% of the moon is not visible from earth at any time.
103
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4
Pluto is smaller than Russia.
9
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12