system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible that we've already discovered planets with life on them, but just don't know it because the planet is so far away that we're seeing it before the life started?
gpt
Theoretically possible yes. Much more likely is that our telescopes can't make out the life on the planet. Our telescopes are only sufficently powerful that we can just about detect exomoons (exoplanet being the term for planets that aren't in our solar system, and exomoons are by extension, moons of exoplanets.) Life would be much harder to detect than a moon.