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:
https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-a-satellite-k4.html
https://solarsystem.nasa.gov/planets/solarsystem/moons
https://history.nasa.gov/sputnik/
http://www.ucsusa.org/nuclear-weapons/space-weapons/what-are-satellites-used-for#bf-toc-5
https://www.livescience.com/39678-incredible-tech-track-hurricanes.html
https://www.space.com/24839-satellites.html
https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-the-iss-k4.html
