The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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Summer on Uranus lasts for 21 years.
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It would take more than 150 years to drive a car to the sun.
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If two pieces of metal touch in space, they become permanently stuck together.
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Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
A comet's tail always points away from the sun.
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