And exactly how often do you notice a stray molecule exhaled by the person standing next to you drifting across your field of vision? Because, given the relati

And exactly how often do you notice a stray molecule exhaled by the person standing next to you drifting across your field of vision? Because, given the relative scales of the things involved (solar systems and space probes), likening Voyager to a molecule is giving it orders of magnitude more ability-to-be-noticed than it's due.