For me...
Europa - This ones pretty cool since its within our solar system and when most people think of life outside of Earth, you'd expect a planet. It's one of Jupiter's moons. Apparently aquatic life is possible due to hydrothermal vents under the thick layers of ice. My guess is it's likely only smaller organisms, but I remember reading one scientist believes octopus-like creatures could also live on it. Surface life is impossible to my knowledge, at least by our standards of life
Trappist-1e - If I remember correctly Trappist-1's solar system in general has a few candidates for life. Scientists believe this planet is the most likely to be similar to Earth. It's within a habitable zone, likely to have liquid water, similar size to Earth, and even has pretty close orbital period. I like to imagine that life there is similar to Earth, maybe even have a species similar to us (not necessarily physically but mentally). I wonder if they're also researching our solar system and wonder about us lmao







if there is anything out there we're probably not gonna know during our lifetimes or even the next 