Detecting (or not-detecting) life on a planet similar to Earth would be groundbreaking. Currently we know of only 1 instance where life arose, and only 1 planet

Detecting (or not-detecting) life on a planet similar to Earth would be groundbreaking. Currently we know of only 1 instance where life arose, and only 1 planet where it's reasonable to expect it to arise. If we detect life on Mars or Europa it would likely be related to our own, so that's not an independent data point. But if we detect that there's definitely life on a planet 3000 light years away, or if we exclude that possibility - that's a massive change in our model of universe, understanding of Fermi paradox and our origins.