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Time since the birth of Cleopatra (2,090 y) is 25 x Time since the first Volkswagen Beetle produced (84 y)
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Altitude of a geosynchronous orbit of a satellite around the Earth (35,800 km)
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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