You write: "Venus is the hottest planet in the solar system..." Yes, if we're talking about its surface and the atmosphere immediately above its surface. The clouds are much cooler, especially about 50 km up, where the atmospheric pressure is still comfortably high — in fact, it approximates ground level atmospheric pressure here on Earth. "...and its acidic environment is, to say the least, extremely hostile to most life forms we know of " Yes, but the life forms we know are adapted to an environment where the predominant liquid is water. It’s long been speculated that living things with different chemistry may be found in environments where a different liquid predominates. See my article: Sulfuric acid may be no problem for Venus life.