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
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
A comet's tail always points away from the sun.
2
Summer on Uranus lasts for 21 years.
358
NASA invented baby food as we know it today.
7
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219