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  Scientists have made the first radio-telescope detection of a huge free-floating planet beyond our solar system, a new study said.

  一新研究稱，科學(xué)家們已對太陽系外的一顆巨大自由浮動的行星進行了首次射電望遠鏡探測。

  The planetary-mass object, called SIMP J01365663+0933473, is about a dozen times more massive than Jupiter, the largest planet in our solar system, and has surprisingly strong magnetic fields, according to the study published in The Astrophysical Journal earlier this week.

  本周早時于《天體物理期刊》上發(fā)表的研究表明，這顆名為SIMP J01365663+0933473的行星，質(zhì)量比太陽系中最大的行星木星大上十幾倍，且擁有驚人的強磁場。

  Scientists detected the enormous planet from the US-based Very Large Array observatory.

  科學(xué)家們從美國的超長基線陣列天文臺探測到了這顆巨大的行星。

  Wandering some 20 light years away from the sun, the 200-million-year-old planet has been dubbed "rogue planet" as it is traveling through space without orbiting any parent star.

  由于它運行于太空，卻又未有圍繞任何母星運行，這顆在離太陽約20光年的地方游蕩、有2億年歷史的行星被稱為“流浪行星”。

  This object is right at the boundary between a planet and a brown dwarf, or ’failed star,’ and is giving us some surprises that can potentially help us understand magnetic processes on both stars and planets, Melodie Kao, leader of the study and Hubble postdoctoral fellow at Arizona State University, said in a press release.

  這項研究的負責(zé)人，亞利桑那州立大學(xué) 的哈勃大學(xué) 博士后Kao于一份新聞稿中稱：“這個物體就在一顆行星和一顆棕矮星之間，或者說是失敗的恒星，它給我們帶來了一些驚喜，可以幫助我們理解恒星和行星上的磁化過程�！�

  According to the study, the huge planet possesses a powerful magnetic field over 200 times stronger than that of Jupiter and can generate dazzling auroras outshining Earth’s polar lights.

  根據(jù)這項研究，這顆巨大的行星擁有比木星強200倍的強大磁場，能產(chǎn)生比地球極光更耀眼的極光。

  On Earth, auroras are generated by interactions between its magnetic field and solar winds. But the fact that the rogue planet is not in the vicinity of any stellar winds makes its auroras something of a puzzle.

  在地球上，極光是由磁場和太陽風(fēng)相互作用產(chǎn)生的。但是，沒有任何星風(fēng)在這顆無賴行星的附近。所以說，它的極光的產(chǎn)生讓人有些費解。

  This particular object is exciting because studying its magnetic dynamo mechanisms can give us new insights on how the same type of mechanisms can operate in extrasolar planets - planets beyond our Solar System, Kao said.

  Kao亦表示，這個特殊的物體實在令人興奮，因為研究它的磁發(fā)電機機制，可以為我們關(guān)于如何在太陽系以外的太陽系外行星中運行相同類型的研究提供新發(fā)現(xiàn)

  Despite its weight, the newly discovered planet has a radius only 1.2 times that of Jupiter, the study said. It has a surface temperature of about 825 degrees Celsius. By comparison, the sun’s surface temperature is about 5,500 degrees Celsius.

  該研究表示，盡管這個新發(fā)現(xiàn)的行星的重量很大，它的半徑卻僅有木星的1.2倍，它的表面溫度約為825℃。相比之下，太陽的表面溫度約為5500℃。

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