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Is There a Hidden ''Super-Earth'' Exoplanet Orbiting Our Closest Stellar Neighbor?

存在一個繞著離我們最近的恒星運行的隱藏著的“超級地球”嗎?



?Scientists have found evidence of a new exoplanet candidate orbiting our closest stellar neighbor, Proxima Centauri.

?科學家們已經發現了繞著離我們最近的恒星——比鄰星運行的一顆系外行星。

?This exoplanet candidate, Proxima c, likely has a mass six times that of Earth.

?這顆系外行星叫做比鄰c行星,它的質量差不多是地球質量的六倍。

?But it''s unlikely that life would survive on the planet, given its frigid temperatures.

?但是看上去在那個行星上沒有生命存在,因為那里的溫度太低了。



But because Proxima Centauri is a relatively dim star, Proxima c is likely to be an extremely frigid world. Temperatures on the planet could dip as low as -388 degrees Fahrenheit, Space.com reports. It''s unlikely we''d find life on such a chilly world.

但是由于比鄰星是一顆相對暗淡的恒星,所以比鄰星c行星可能是一個極度寒冷的世界。這顆行星上的氣溫可能會低至零下388華氏度。或許我們不可能在如此嚴寒的世界里找到生命的跡象。

An international team of researchers analyzed 17 years worth of data from the HARPS (High Accuracy Radial Velocity Planet Searcher) and the UVES (Ultraviolet and Visual Echelle Spectrograph)—both of which are installed on European Southern Observatory telescopes in Chile. The scientists noticed that Proxima Centauri experienced an unexplained wobble that could be explained by the gravitational tug of another planet.

一個國際研究團隊分析了17年來自位于智利的歐洲南方天文臺的HARPS光譜儀和紫外可見分光光度計的數據。科學家們注意到比鄰星正在經歷無法解釋的不穩定期,這可能是由于另一顆行星對它產生的重力場造成的。

For now, Proxima c remains only an exoplanet candidate as scientists train additional planet-hunting instruments on the star system to confirm the obxt''s existence. But such a startlingly discovery so close to home would show just how much more there is to learn about the stars lying in our cosmic backyard.

現在,比鄰星c星只是入選了可能宜居的系外行星的候選名單,因為科學家們還在用行星觀測設備來確認這顆星球是否存在。但是這樣一個驚人的發現(這顆行星離我們的地球如此之近)也提醒著我們那些離我們的星系近的那些星球還有很多值得我們去探索的地方。