*Astronauts brought back about 800 pounds of lunar rock to Earth. Most of it has not been analyzed.*
* Approximately 40,000 tons of meteoric dust hits the Earth each year. *
* According to Hawaiian lore, the earth mother Papa mated with the sky father Wake to give birth to the Hawaiian Islands. *
* About one-tenth of the earth's surface is permanently covered with ice. *
* A Red Giant(a kind of exploded star) has a lower density than any vacuum here on earth. *
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