Pluto is smaller than Russia.
9
The Earth gets 100 tons heavier every day due to falling space dust.
673
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
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
Venus is the only planet that rotates clockwise.
310