Lessons from Earth Aerobiology for Venus Habitability Science

Venus clouds: why the astrobiology interest? Early history favorable for life? Early planetary history believed to be similar to Earth’s Surface water (ground water, lakes, or oceans)[1] & geological activity. By analogy, potential for an Earth-like biochemistry (water, carbon, etc.). Could life have persisted in the remaining water, i.e., in the sulfuric acid cloud layer? Some currently unexplained observations: absorption properties[2], phosphine[3], sulfur & other chemical cycling[4].