If NASA sent birds into space they would soon die; they need gravity to swallow.
146
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
Sound doesn't travel in space.
255
If two pieces of metal touch in space, they become permanently stuck together.
808
Pluto is smaller than Russia.
9