It 'snows' metal on Venus.
13
The heart of an astronaut actually gets smaller when in outer space.
216
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
41% of the moon is not visible from earth at any time.
103
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
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
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15