Earth-Observing Satellites

Since 1957 and Sputnik 1, man had been sending satellites into space, all with different jobs to do.  While some are turned towards space to observe, others are used for communication, and some are turned back to Earth to observe life here. Just what do they see, however?  Today’s infographic takes a look at some of these Earth-observing satellites and gives sample images from most. [VIA]

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