41% of the moon is not visible from earth at any time.
103
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
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The sun is 330,330 times larger than the earth!
190
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
There are two golf balls sitting on the moon.
721
Astronauts get taller when they are in space.
224

