You know how you can communicate over a noisy line N as in Nancy, S as in Samuel, and so on. You are essentially trading speed for clarity. They do the same when communicating over long distance. The longer the distance the closer the useful signal to the background (*) noise so it’s more noisy. As the noise increases they compensate by slowing down transmission.
(*) You can’t get rid of background noise because it’s produced by the heat of electronics. They cool down electronics in deep space network antennas cryogenically but there is a practical limit how low they can go.
Latest Answers