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
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
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
It 'snows' metal on Venus.
13