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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
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
A comet's tail always points away from the sun.
2
There are more nerve cells in the human brain than there are stars in the Milky Way.
349