Can you explain how cell phones and cell towers communicate at high speeds? Like on the motorway? (Does some of the signal get lost behind?),(reply>), But on a cosmic scale... we have redshift/blueshift. And there is such a thing as radar to catch speeding vehicles :),(reply>), The speed of ANY vehicle is negligible compared to the speed of radio waves (the speed of light).<br>No data is lost or left behind, just as you never see a shift in the color of lights or objects as you travel towards or away from them.,(reply>), Without digging into this, it's likely there is some doppler shift going on with the signal. This basically means the frequency of the signal changes with the direction you're going. So higher frequency when moving towards a cell tower, lower frequency moving away from it.<br>So in case of a digital signal, what changes is the bandwidth of the connection. Higher frequency = higher data rate, lower frequency = lower data rate.<br>Just imagine the bits meeting you when they are moving towards you, and you to them. While you'll meet less bits in the same timespan when you are moving away from them, but they're faster than you, thus catching up.<br><br>I'm sure someone will correct me if I'm wrong here. And it's likely it is more complex than that.