Summer on Uranus lasts for 21 years.
358
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
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
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Lightning strikes about 6,000 times per minute on this planet!
158
Only 55% of Americans know that the sun is a star.
986
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178