The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
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 sun puts out more power in 1 second than mankind has ever used within human existence.
14
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