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World News: TESS discovers a dense sub-Neptune exoplanet, plus an Earth-sized wor - Astronomy Magazine

Finally, HD 21749b is also pretty cool. The world sports temperatures that hover around 300 degrees Fahrenheit (150 Celsius), which is just a bit too hot for liquid water to exist on its surface. In addition to finding HD 21749b, TESS also recently discovered an Earth-sized world orbiting the same system's host star. However, since…


Source:astronomy.com


Posted: 2019-01-10 23:21:39

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World News: TESS discovers a dense sub-Neptune exoplanet, plus an Earth-sized wor - Astronomy Magazine | Daily Global News | RobinsPost News Network - Newscast

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A super-Earth is an extrasolar planet with a mass higher than Earth's, but substantially below those of the Solar System's ice giants, Uranus and Neptune, which are 15 and 17 times Earth's, respectively. The term "super-Earth" refers only to the mass of the planet, and so does not imply anything about the surface conditions or habitability.The alternative term "gas dwarfs" may be more accurate ...

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