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
If two pieces of metal touch in space, they become permanently stuck together.
808
Pluto is smaller than Russia.
9
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Only 55% of Americans know that the sun is a star.
986