New findings a 'complete reversal' in understanding why Earth became hospitable to life and its 'twin' didn't

New findings a 'complete reversal' in understanding why Earth became hospitable to life and its 'twin' didn't

Sign up for CNN's Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. (CNN)Venus may be a sweltering wasteland today, but scientists have questioned whether the planet was always so inhospitable. While previous studies suggested Venus might have once been covered in oceans, new research has found the opposite: Venus has likely never been able to support oceans. Researchers also determined that a similar story could have played out on Earth as well had things been just a bit different. Venus, our closest planetary neighbor, is called Earth's twin because of the similarity in size and density of both planets. Otherwise, the planets differ radically. While Earth is a natural hub for life, Venus is a lifeless planet with a toxic carbon dioxide …
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