Are there passive a̳l̳i̳e̳n̳ signals out there for us to find? What about active signals that a̳l̳i̳e̳n̳s might be intentionally sending out in hope of other life forms receiving it?
If there are intelligent a̳l̳i̳e̳n̳s out there, could they have already picked up some of our radio transmissions?
