An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Some asteroids have other asteroids orbiting them.
131
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124