A team of astronomy researchers in Montreal announced Thursday that two previously discovered exoplanets hundreds of light years away likely are primarily made of water.
that two previously discovered exoplanets hundreds of light years away likely are primarily made of water., they’re instead likely covered in an atmosphere of steam, the researchers believe.
The two potentially watery exoplanets, known as Kepler-138 c and d, and a third smaller planet were previously discovered by the Kepler Space Telescope in 2014, though the new study found evidence of a fourth exoplanet, researchers said. Both “c” and “d” are about 20% larger than Earth. Researchers spent the next two years studying the exoplanets’ atmospheres using Hubble and Spitzer and announced their findings in Nature Astronomy on Thursday.
Unlike Earth and its vast oceans, these planets sit much closer to their star, meaning their surface is too hot for liquid water.
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