41% of the moon is not visible from earth at any time.
103
There are two golf balls sitting on the moon.
721
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Astronauts get taller when they are in space.
224
Astronauts cannot burp in space.
232