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
The Earth gets 100 tons heavier every day due to falling space dust.
673
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
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
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15