If two pieces of metal touch in space, they become permanently stuck together.
808
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
Astronauts get taller when they are in space.
224
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Only 55% of Americans know that the sun is a star.
986
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194