I know it's the year 2020 and we're capable of some amazing technical feats, but for some reasons the fact that we can have bidirectional communication with something so old and so far away is astounding to me.
Over the course of my life, I feel like I've read the "Voyager is going to go out of communication range/Voyager has gone out of communication range/Wait, no, they figured something out" series of stories several times.