Summer on Uranus lasts for 21 years.
358
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Sound doesn't travel in space.
255
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16