Jupiter's moon Ganymede, is larger than the planet Mercury!
149
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
The earth is .02 degrees hotter during a full moon.
157
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Astronauts get taller when they are in space.
224