Earth is the only planet in our solar system that's not named after a god or goddess.
17
A comet's tail always points away from the sun.
2
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
Sound doesn't travel in space.
255
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
It 'snows' metal on Venus.
13
The sun is 330,330 times larger than the earth!
190