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EXOPLANETSI World Found Around Proxima Centauri

机译:在Proxima Centauri附近发现了EXOPLANETSI世界

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Astronomers have discovered a planet orbiting the closest star to our solar system, Proxima Centauri. Proxima is a small, red M dwarf only about half as hot as the Sun and 14% as wide. It's member C of the Alpha Centauri triple-star system, which lies just over 4 light-years away. Guillem Anglada-Escudé (Queen Mary University of London) and colleagues report in the August 25th Nature that the newly discovered world, dubbed Proxima Centauri b, has a mass at least 1.3 times that of Earth, meaning it's potentially rocky. It orbits the star every 11.2 days at a distance of only 0.05 astronomical unit, or roughly 10% Mercury's orbital distance from the Sun. That places it right in the star's putative habitable zone.
机译:天文学家已经发现了一颗行星,它是离我们太阳系最近的恒星,Proxima Centauri。 Proxima是一个小的红色M矮星,只有太阳的一半热,宽14%。它是半人马座Alpha Centauri三星级系统的C成员,距离它仅4光年。伦敦女王玛丽大学的吉伦·安格拉达·埃斯库德(GuillemAnglada-Escudé)及其同事在8月25日的《自然》杂志上报告说,这个新发现的世界被称为Proxima Centauri b,其质量至少是地球的1.3倍,这意味着它可能是岩石。它每11.2天绕恒星运行一次,其距离仅为0.05天文单位,即水星与太阳的轨道距离约为10%。这样就将其放置在恒星推测的宜居区域中。

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