Earth-mass planet resembles a mini-Neptune
Exoplanet 200 light-years away made mostly of gas, not rock
By Andrew Grant, 15:45 PM January 8, 2014
OXON HILL, Md.— A newly discovered exoplanet weighs about the same as Earth — but that’s where the similarities end. Its discovery, reported January 6 at the American Astronomical Society meeting and online at arXiv.org, illustrates the complexities of classifying planets outside the solar system.
The planet, KOI-314c, orbits a small, cool star 200 light-years away in the constellation Lyra. While the planet’s mass is similar to Earth’s, its diameter is 60 percent larger, said David Kipping, a...
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