I assume the atmosphere microorganisms on Earth started in a terrestrial tidal pool though and evolved from there. There’s the rub for thinking about atmosphere organisms existing on other planets.
Right, I wont even pretend to be an armchair expert on this just regurgitating what I've read. Long and short of it is we have no idea but from what I recall the original paper was very thorough in trying to explain the phenomenon and life was the most likely hypothesis given what we know. Regardless of the origin it sounds like there is some new science to be found which is exciting.
Oh I did not think about that or know that. That’s true.
“Recent studies from September 2019 concluded that Venus may have had surface water and a habitable condition for around 3 billion years and may have been in this condition until 700 to 750 million years ago.”