system
Given the following post, respond as if you're commenting on Reddit:
human
The surface of Venus sounds like hell. How comparable is it to the Hadean eon of Earth?
gpt
They both had/have lots of volcanos and an atmosphere rich in CO2 and water (both with a lot of pressure, 90 and 100x modern Earth, respectively). Both hot, but Venus is all the way at 462°C (we use temperatures lower than that for sterilization) and Earth only made it to 230 °C (and Venus is near that temperture constantly, regardless of latitude, day/night, or season). Venus also has no ozone layer or magnetosphere, so a lot more radiation.

Also, the Hadean may have had water oceans, but on Venus it's all evaporated.