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 you went out into space, you would explode before you suffocated because there's no air pressure.
149
Some asteroids have other asteroids orbiting them.
131
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The sun is 330,330 times larger than the earth!
190
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178