Study Suggests Hellish Venus-Like Planets May Outnumber Habitable Exoplanets
Hellish Venus-Like Planets May Be More Prevalent Than True ExoEarths

Image: Universe Today
A recent study presented at the European Geosciences Union General Assembly indicates that Venus-like planets may be twice as common as Earth-like habitable planets. Researchers suggest that carbon dioxide-dominated atmospheres can easily form after a magma ocean phase, raising questions about the atmospheric retention of rocky exoplanets around red dwarf stars.
- 01The study's lead author, Sean Jordan, is a postdoctoral fellow at ETH Zurich, Switzerland.
- 02There are numerous rocky exoplanets, with dozens identified as potential Venus-like candidates, though none have been confirmed.
- 03The research highlights the variability among extrasolar Venus-type planets, influenced by their diverse interstellar environments.
- 04Future missions to Venus and advanced space telescopes are expected to improve understanding of exoplanet atmospheres over the next couple of decades.
- 05Jordan emphasizes that Venus may not have 'gone wrong' but could have formed with its current conditions from the start.
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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.
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