Preliminary findings from a study presented at the European Geosciences Union General Assembly in Vienna suggest that hellish Venus-like planets could be about twice as common as habitable Earth-like planets. Sean Jordan, a postdoctoral fellow in exoplanet studies at ETH Zurich, explained that it is plausible for a carbon dioxide-dominated atmosphere to form after a planet's magma ocean phase. This raises the possibility of numerous rocky exoplanets, with several dozen identified as potential Venus-like candidates, although none have been confirmed yet. The study acknowledges the variability among these planets, as they will be found in diverse interstellar environments and orbiting different types of stars.

Jordan also noted that understanding Venus is crucial for contextualizing the study of extrasolar Venus-like planets. He pointed out that while Venus has been underexplored, the data we do have can inform our expectations for exoplanets. Future missions to Venus and advancements in space telescopes are anticipated to enhance our understanding of exoplanet atmospheres over the next couple of decades. The research ultimately questions whether planets can retain their atmospheres in the face of high-energy radiation from their parent stars, a key factor in determining their habitability.