New Findings Suggest Venus Never Had Oceans, Conditions Needed for Life

New Findings Suggest Venus Never Had Oceans, Conditions Needed for Life

Astrophysicists led by the UNIGE and the NCCR PlanetS have investigated the past of Venus to find out whether Earth’s sister planet once had oceans. The planet Venus can be seen as the Earth’s evil twin. At first sight, it is of comparable mass and size as our home planet, similarly consists mostly of rocky material, holds some water and has an atmosphere. Yet, a closer look reveals striking differences between them: Venus’ thick CO2 atmosphere, extreme surface temperature and pressure, and sulfuric acid clouds are indeed a stark contrast to the conditions needed for life on Earth. This may, however, have not always been the case. Previous studies have suggested that Venus may have been a much more hospitable place in the past, with its own liquid water oceans. …
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