The Origin of the Pioneer Probes and Spacecraft

Pioneer probes and subsequent spacecraft are non human machines that merely bear inscriptions of human beings, be they actual inscriptions or media of some sort. And at the same time, these are our mechanical works, our machine utterances, that are cast out into the void. They are us reaching out for and to other life forms. Yet, we haven't talked about dyson spheres in a while, but unless my memory is betraying me, i think one of the ways to look for something like that would be look out there and see if there's some kind of structure or object that is basically y emitting heat.