The heart of an astronaut actually gets smaller when in outer space.
216
Astronauts cannot burp in space.
232
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
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 light hitting the earth right now is 30 thousand years old.
163
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Venus is the only planet that rotates clockwise.
310
It 'snows' metal on Venus.
13