Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Astronauts cannot burp in space.
232
Pluto is smaller than Russia.
9
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Astronauts get taller when they are in space.
224
Buzz Aldrin’s mother’s maiden name was Moon.
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
Some asteroids have other asteroids orbiting them.
131