Weird 'Sub-Neptune' Exoplanet Discovered by NASA Space Telescope
NASA's newest planet-hunting probe has bagged another alien world, the eighth confirmed find for the young mission.The Transiting Exoplanet Survey Satellite (TESS) has discovered a planet orbiting the star HD 21749, which lies about 53 light-years from Earth in the faint constellation Reticulum, scientists announced today (Jan. 7).The world, known as HD 21749b, is a weirdo, at least by the standards of our own solar system. It's a "sub-Neptune" about three times bigger than Earth, which means it's likely gaseous rather than rocky. But HD 21749b is made of denser stuff than the gaseous worlds we're used to, because it's 23 times more massive than Earth.Read more here: Space.com
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