The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Sound doesn't travel in space.
255