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You might not know it, but there are thousands of human-made satellites orbiting the Earth! They help us do everything from study the climate to make phone calls, and there are even some satellites that people can live on!
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SOURCES:
www.nasa.gov/a...
solarsystem.na...
history.nasa.g...
www.ucsusa.org/...
www.livescienc...
www.space.com/...
www.nasa.gov/a...