The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Venus is the only planet that rotates clockwise.
310
The sun is 330,330 times larger than the earth!
190