Outside solar system, we can hardly observe anything but supercivilizations as we conjecture they should be. In our solar system, non-sentient life is still not

Outside solar system, we can hardly observe anything but supercivilizations as we conjecture they should be. In our solar system, non-sentient life is still not fully excluded on Mars, and there is a reasonable chance of finding something on Europa, Titan or other big moons. In the galaxy overall from what we know now about occurrence of planets in habitable zones, there likely should be tens of million earthlikes with a substantial sized moon.