define life…
Trouble is there’s so much that we just don’t know or can’t account for. There could be as many as 40 billion earth sized planets orbiting habitable zones around stars in the milky way alone…11 billion of those could be in orbit around sun sized stars. But..How much does a gas giant like Jupiter play, it’s drawn countless earth destroying asteroids into it’s orbit, without a large-ish moon orbiting reasonably closely it’s argued you wouldn’t get tides, which some scientists have argued are essential for early life.
Some have argued that all civilisations will destroy themselves through war at some point, or will reach a point where they are almost at space faring level (look up Type 1,2,3 civilisations theory)
extinction seems to be a normal event, perhaps we’ve missed ours, perhaps it’s still to come.
Perhaps we’re the ones that have succeeded, in which case we’re incredibly rare, in lots of ways, if they find simple life on other planets or bodies in our solar systems, it’s probably curtains.
Perhaps there are races so advanced that we don’t even raise a mention. How often in the woods have you stood and stopped to try to communicate with an ant hill?
To many unanswerable questions, best we look after this planet. It may be the only one ever.