Dr. Keas explains, among things, the role that Venus with its phases, like those of our Moon, played in advancing astronomy into the modern age.
The newer study agrees that the composition of Venus’s atmosphere is unusual but not that it is evidence for life.
Scientists are making observations that add to Denton’s case, further constraining the requirements for habitability.
For photosynthesis to proceed on a planet like Earth, sunlight (visual light) must penetrate the atmosphere all the way to the ground.
Chemicals that we shouldn’t find unless they are produced by life forms are sparking interest in exploring Venus from both public and private sources.