If early Venus possessed oceans, NASA climate simulations suggest it could have remained potentially habitable for nearly three billion years, with temperatures between 20 and 50°C—until massive volcanic outgassing around 700 million years ago may have transformed it into the inferno we see today.

NASA climate simulations keep an assumed early Venus ocean temperate for almost three billion years, but competing models and atmospheric chemistry challenge whether that ocean ever formed. The post If early Venus possessed oceans, NASA climate simulations su…