DrCaleb DrCaleb:
BartSimpson BartSimpson:
Returning to what I did comment on:
Under what criteria do you consider the warming on Venus to be 'catastrophic'?
What was catastrophically impacted by this warming?
I'm not sure what you want here. Venus' climate was drastically altered by greenhouse gasses.
Explain to me how the warming on Venus constituted a 'catastrophe'? Who or what was impacted by the warming?
DrCaleb DrCaleb:
Let's not forget, we know very little about Venus,
Yet you assert here that Venus was apparently capable of supporting life at one point and then there was a catastrophic warming that impacted that life. If there was no life then there was also no catastrophe.
DrCaleb DrCaleb:
and what we do know is that almost no sunlight reaches the surface of the planet, but the surface temperature can be over 1000C. All that heat is due to greenhouse gasses, carbon dioxide specifically.
What was impacted? We don't know enough about Venus' past to make that determination.
Yet you emotionally claim that the warming 1) took place after a prior state of atmosphere on the planet 2) that it was a catastrophe which implies an effect on what is otherwise a dead planet.
Neither of these assertions is accurate based upon your own admission here that we know very little about the planet.