An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Astronauts cannot burp in space.
232
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The Earth gets 100 tons heavier every day due to falling space dust.
673
