What did the University of Cambridge study suggest accelerated Venus's transition to a runaway greenhouse effect?

The Sun’s increasing luminosity over time

Research originating from the University of Cambridge challenges the longer estimates for ancient Venusian habitability. This study focused on the expected evolution of the Sun, noting that the Sun's luminosity naturally increases over astronomical timescales. This increased solar energy would have forced Venus into a runaway greenhouse effect much faster than older models predicted, even if it started with Earth-like water levels. Consequently, the research indicates that the window for sustained surface liquid water was significantly shorter, likely leading to the rapid vaporization of water into space before widespread, durable life could emerge.