Summer on Uranus lasts for 21 years.
358
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The light hitting the earth right now is 30 thousand years old.
163
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
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