I found these articles to be really interesting because they showed me exactly how GPS works down to the slightest detail, but more importantly they gave me a logical connection between certain inventions and practices I already knew about. specifically, the relationship between GPS and the practice of measuring speed at sea using a small hourglass and rope.
Something else I found really to be almost jaw dropping is the amound of junk that is shot into space. I wonder how many of these satelites can be used for GPS and other spacial mapping programs to deliver more accurate data and even real time scanning
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