RE: Possible signs of life found in the atmosphere of Venus
September 14, 2020 at 7:05 pm
(This post was last modified: September 14, 2020 at 7:09 pm by Anomalocaris.)
I think geothermal warmed liquid water mantle under ice cover, such as those on Europa, Enceladus, Ganymede, and Callisto, and apparently also Pluto, remain the best prospects in solar system for sizable presence of life even vaguely similar to us in chemistry or organization. mars might also hosts a remnant subsurface biosphere in geothermal warmed aquifer. Titan surface is probably far too cold to enable organic chemistry to proceed very far within the age of the solar system.
I also think organic life sign on venus is a mirage. it seem difficult to imagine an entirely airborne biosphere as no organics will survive even in the lower Venusian atmophere, much less the surface. how nutrients reach upper atmosphere, or will be steadily replenish is hard to imagine. i think we simply have not done adequate research to anticipate all the nonbiological chemical processes that can possibly introduce trace amounts of organic molecules into a nonbiological planetary environment.
I also think organic life sign on venus is a mirage. it seem difficult to imagine an entirely airborne biosphere as no organics will survive even in the lower Venusian atmophere, much less the surface. how nutrients reach upper atmosphere, or will be steadily replenish is hard to imagine. i think we simply have not done adequate research to anticipate all the nonbiological chemical processes that can possibly introduce trace amounts of organic molecules into a nonbiological planetary environment.
