An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Astronauts get taller when they are in space.
224
A comet's tail always points away from the sun.
2
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
Summer on Uranus lasts for 21 years.
358