Summer on Uranus lasts for 21 years.
358
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
41% of the moon is not visible from earth at any time.
103
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 light hitting the earth right now is 30 thousand years old.
163
Astronauts get taller when they are in space.
224
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
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