The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
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
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
A comet's tail always points away from the sun.
2