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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Some asteroids have other asteroids orbiting them.
131
Buzz Aldrin’s mother’s maiden name was Moon.
9
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10