Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Some asteroids have other asteroids orbiting them.
131
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
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
Astronauts cannot burp in space.
232
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Only 55% of Americans know that the sun is a star.
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