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
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Summer on Uranus lasts for 21 years.
358
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
There are two golf balls sitting on the moon.
721
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118