Satellite - Wikipedia
https://en.wikipedia.org/wiki/Satellite
OverviewHistoryComponentsApplicationsPollution and interferenceExternal linksA satellite or artificial satellite is an object intentionally placed into orbit in outer space. Satellites have a variety of uses, including communication relay, weather forecasting, navigation (GPS), broadcasting, scientific research, and Earth observation. Additional military uses are reconnaissance, early warning, signals intelligence and, potentially, weapon delivery. Other satellites include the final …
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