Depends on the alien species: We humans are already looking at other planets and their atmospheres, and we have no hope of going there or making contact with anything even if it exists.
If they are anywhere near as curious and as advanced as humans, they’ve probably spotted us already. (well, “as advanced as humans”, we’ve only been able to look at other planet atmospheres since like ~2016, when ever certain satelites launched, soo…)
There’s a bird in the forest, plain for all to see, if they look. But they’re not looking until he starts singing.
(Serious, does that analogy stand up?)
Depends on the alien species: We humans are already looking at other planets and their atmospheres, and we have no hope of going there or making contact with anything even if it exists.
If they are anywhere near as curious and as advanced as humans, they’ve probably spotted us already. (well, “as advanced as humans”, we’ve only been able to look at other planet atmospheres since like ~2016, when ever certain satelites launched, soo…)