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
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The earth rotates more slowly on its axis in March than in September.
145
Summer on Uranus lasts for 21 years.
358
Astronauts cannot burp in space.
232
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