Hi Reddit, Long time lurker, occasional commenter, and first ever Reddit post. Greetings! Why you might find this interesting: I am a tenured academic research scientist in isotope geochemistry, specifically working on the early Earth and with a particular focus on earliest traces of microbial life in the Archean (prior to 2.5 billion years ago). So I’m naturally interested in UAP and the possibility of intelligent life visiting this planet - especially because it might pertain to the history...