Title. Also maybe more extreme, but how is the Mars Rover sending pictures to earth. I cannot grasp how this works over such a long distance.
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Radio signals are just a form of light that we can’t see. Light in a ~vacuum travels at the speed of light (obviously). Distance affects signal quality and how much data you can transmit but when traveling at relativistic speeds (ie the speed of light) the distance we are transmitting and receiving from isn’t really that crazy especially with nothing like air or water in the way to diffuse the signal.
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