Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
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
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
The earth is .02 degrees hotter during a full moon.
157
Summer on Uranus lasts for 21 years.
358
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219