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
Venus is the only planet that rotates clockwise.
310
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Sound doesn't travel in space.
255
It 'snows' metal on Venus.
13