轻松背单词新浪微博 轻松背单词腾讯微博
轻松背单词微信服务号
当前位置:首页 -> 10级英语阅读 - > 科学家发现首个不依附星系的行星
科学家发现首个不依附星系的行星
添加时间:2018-08-24 14:41:51 浏览次数: 作者:未知
Tip:点击数字可快速查看单词解释  
  • Scientists have made the first radio-telescope detection of a huge free-floating planet beyond our solar system, a new study said.

    一新研究称,科学家们已对太阳系外的一颗巨大自由浮动的行星进行了首次射电望远镜探测。

    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.

    本周早时于《天体物理期刊》上发表的研究表明,这颗名为SIMP J01365663+0933473的行星,质量比太阳系中最大的行星木星大上十几倍,且拥有惊人的强磁场。

    Scientists detected the enormous planet from the US-based Very Large Array observatory1.

    科学家们从美国的超长基线阵列天文台探测到了这颗巨大的行星。

    Wandering some 20 light years away from the sun, the 200-million-year-old planet has been dubbed2 "rogue3 planet" as it is traveling through space without orbiting any parent star.

    由于它运行于太空,却又未有围绕任何母星运行,这颗在离太阳约20光年的地方游荡、有2亿年历史的行星被称为“流浪行星”。

    This object is right at the boundary between a planet and a brown dwarf4, 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.

    这项研究的负责人,亚利桑那州立大学 的哈勃大学 博士后Kao于一份新闻稿中称:“这个物体就在一颗行星和一颗棕矮星之间,或者说是失败的恒星,它给我们带来了一些惊喜,可以帮助我们理解恒星和行星上的磁化过程。”

    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.

    根据这项研究,这颗巨大的行星拥有比木星强200倍的强大磁场,能产生比地球极光更耀眼的极光。

    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,极光是由磁场和太阳风相互作用产生的。但是,没有任何星风在这颗无赖行星的附近。所以说,它的极光的产生让人有些费解。

    This particular object is exciting because studying its magnetic dynamo mechanisms5 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,这个特殊的物体实在令人兴奋,因为研究它的磁发电机机制,可以为我们关于如何在太阳系以外的太阳系外行星中运行相同类型的研究提供新发现

    Despite its weight, the newly discovered planet has a radius6 only 1.2 times that of Jupiter, the study said. It has a surface temperature of about 825 degrees Celsius7. By comparison, the sun’s surface temperature is about 5,500 degrees Celsius.

    该研究表示,尽管这个新发现的行星的重量很大,它的半径却仅有木星的1.2倍,它的表面温度约为825℃。相比之下,太阳的表面温度约为5500℃。

     10级    双语 
     单词标签: observatory  dubbed  rogue  dwarf  mechanisms  radius  Celsius 


    点击收听单词发音收听单词发音  

    1 observatory [əbˈzɜ:vətri] hRgzP   第8级
    n.天文台,气象台,瞭望台,观测台
    参考例句:
    • Guy's house was close to the observatory. 盖伊的房子离天文台很近。
    • Officials from Greenwich Observatory have the clock checked twice a day. 格林威治天文台的职员们每天对大钟检查两次。
    2 dubbed ['dʌbd] dubbed   第8级
    v.给…起绰号( dub的过去式和过去分词 );把…称为;配音;复制
    参考例句:
    • Mathematics was once dubbed the handmaiden of the sciences. 数学曾一度被视为各门科学的基础。
    • Is the movie dubbed or does it have subtitles? 这部电影是配音的还是打字幕的? 来自《简明英汉词典》
    3 rogue [rəʊg] qCfzo   第12级
    n.流氓;v.游手好闲
    参考例句:
    • The little rogue had his grandpa's glasses on. 这淘气鬼带上了他祖父的眼镜。
    • They defined him as a rogue. 他们确定他为骗子。
    4 dwarf [dwɔ:f] EkjzH   第7级
    n.矮子,侏儒,矮小的动植物;vt.使…矮小
    参考例句:
    • The dwarf's long arms were not proportional to his height. 那侏儒的长臂与他的身高不成比例。
    • The dwarf shrugged his shoulders and shook his head. 矮子耸耸肩膀,摇摇头。
    5 mechanisms ['mekənɪzəmz] d0db71d70348ef1c49f05f59097917b8   第7级
    n.机械( mechanism的名词复数 );机械装置;[生物学] 机制;机械作用
    参考例句:
    • The research will provide direct insight into molecular mechanisms. 这项研究将使人能够直接地了解分子的机理。 来自《简明英汉词典》
    • He explained how the two mechanisms worked. 他解释这两台机械装置是如何工作的。 来自《简明英汉词典》
    6 radius [ˈreɪdiəs] LTKxp   第7级
    n.半径,半径范围;有效航程,范围,界限
    参考例句:
    • He has visited every shop within a radius of two miles. 周围两英里以内的店铺他都去过。
    • We are measuring the radius of the circle. 我们正在测量圆的半径。
    7 Celsius [ˈselsiəs] AXRzl   第10级
    adj.摄氏温度计的,摄氏的
    参考例句:
    • The temperature tonight will fall to seven degrees Celsius. 今晚气温将下降到七摄氏度。
    • The maximum temperature in July may be 36 degrees Celsius. 七月份最高温度可能达到36摄氏度。

    文章评论 共有评论 0查看全部

      会员登陆
      热门单词标签
    我的单词印象
    我的理解: