A comet's tail always points away from the sun.
2
Sound doesn't travel in space.
255
It 'snows' metal on Venus.
13
Pluto is smaller than Russia.
9
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82