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By Carlos M. Meléndez Apr 09, 2021 Satellites have come a long way since Sputnik was first launched in 1957.  While early satellites were designed solely for communication and broadcasting, today’s satellites are equipped with sensors and cameras. They are not only bringing television signals to remote areas and empowering GPS, but they’re also used by scientists to study the planet, and by governments to safeguard territories and address urban sprawl.    With over 2,600 satellites in orbit, including miniature nanosats or cubesats, a single site on earth can be seen multiple times a day with time-lapse technology. Scientists can see different views at different times and use this information to discern patterns and establish a chronology.  

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