蜜臀av性久久久久|国产免费久久精品99|国产99久久久久久免费|成人精品一区二区三区在线|日韩精品一区二区av在线|国产亚洲欧美在线观看四区|色噜噜综合亚洲av中文无码|99久久久国产精品免费播放器

<cite id="ygcks"><center id="ygcks"></center></cite>
  • 
    
  • <rt id="ygcks"></rt>
    <cite id="ygcks"></cite>
  • <li id="ygcks"><source id="ygcks"></source></li> <button id="ygcks"></button>
  • <button id="ygcks"></button>
    <button id="ygcks"><input id="ygcks"></input></button>
    
    
    <abbr id="ygcks"><source id="ygcks"></source></abbr>
    
    
    
     
    
    

    Scientists find new evidence of water plumes on Jupiter's moon Europa

    Source: Xinhua| 2018-05-15 06:44:25|Editor: Mu Xuequan
    Video PlayerClose

    WASHINGTON, May 14 (Xinhua) -- Space physicists used existing data and advanced computer models to provide additional evidence that Jupiter's moon Europa may have the ingredients to support life.

    In a study published on Monday in the journal Nature Astronomy, researchers led by Jia Xianzhe at the University of Michigan in Ann Arbor reexamined data collected by the U.S. space agency NASA's Galileo spacecraft in 1997, finding that the moon's subsurface liquid water reservoir may be venting plumes of water vapor above its icy shell.

    "The data were there, but we needed sophisticated modeling to make sense of the observation," Jia said.

    Previously, the Galileo team didn't suspect the spacecraft might be grazing a plume erupting from the icy moon, about 200 kilometers above Europa's surface, during a flyby.

    But Jia's team examined the information gathered during that flyby 21 years ago, and high-resolution magnetometer data revealed a brief, localized bend in the magnetic field.

    Scientists had learned from exploring plumes on Saturn's moon Enceladus that material in plumes becomes ionized and leaves a characteristic blip in the magnetic field. It also happened on Europa, according to Jia.

    The findings are good news for NASA's Europa Clipper mission, which may launch as early as June 2022. From its orbit of Jupiter, Europa Clipper will sail close by the moon in rapid, low-altitude flybys.

    If plumes are indeed spewing vapor from Europa's ocean or subsurface lakes, Europa Clipper could sample the frozen liquid and dust particles.

    TOP STORIES
    EDITOR’S CHOICE
    MOST VIEWED
    EXPLORE XINHUANET
    010020070750000000000000011105091371790841
    扎囊县| 凯里市| 雅江县| 珲春市| 辽阳县| 建德市| 永泰县| 安仁县| 遂川县| 青川县| 霞浦县| 龙海市| 增城市| 黄平县| 大城县| 山西省| 阿荣旗| 冷水江市| 稻城县| 和硕县| 赫章县| 灵武市| 安岳县| 资兴市| 博野县| 普兰县| 阳谷县| 夏津县| 阿巴嘎旗| 信宜市| 六安市| 漯河市| 晋城| 资中县| 西峡县| 司法| 上栗县| 临夏县| 小金县| 轮台县| 元谋县|