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Hubble Discovers the First 'Waterworld,' an Exoplanet Covered in Water
Really, really hot water The James Webb Space Telescope may someday put Hubble out of business, but until then NASA's old standby is still making new discoveries. Today, that comes to us in the form of the first exoplanet "waterworld"--a water-covered planet shrouded by a dense, steamy atmosphere, the first confirmed planet of its kind. The planet, known as GJ1214b, was discovered in 2009 by ground-based observations. But at that time it was difficult to glean much from the data other than the fact that the planet was indeed out...
Published By: Popular Science - Tuesday, 21 February
