The population of the Earth has more than doubled since 1950.
151
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Only 55% of Americans know that the sun is a star.
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