It 'snows' metal on Venus.
13
Sound doesn't travel in space.
255
A comet's tail always points away from the sun.
2
Jupiter is bigger than all the other planets combined.
254
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