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
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
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