OK Bear with me . . Is it possible to cuircumvent the limitations of Light speed communications by using an incredibly long nano tube attached to an electromagnetic actuator held in orbit between earth and say mars with some sort of satelite system? You could send a message to the receiver , the signal is translated, and the tube's actuator moves the tube back and forth in some type of binary or morse code. The other end would then relay the decoded signal and send it off to the rover / team / whatever. Instead of taking hours would the communication be reduced to a few minutes? (see primitive MS Paint picture for a rough idea of what I am thinking) Go ahead, shoot holes in the idea I can handle it , but be fair.