The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Astronauts cannot burp in space.
232
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
More than 20 million meteoroids enter Earth's atmosphere every day.
139
A comet's tail always points away from the sun.
2
Buzz Aldrin’s mother’s maiden name was Moon.
9