1. <tbody id="lqaum"></tbody>
      1. 手机APP下载

        您现在的位置: 首页 > 在线广播 > VOA慢速英语 > VOA慢速-科技报道 > 正文

        VOA慢速英语(翻译+字幕+讲解):奇怪的物体可能是一颗被撕裂行星的残骸

        来源:可可英语 编辑:aimee ?  VIP免费外教试听课 |  可可官方微信:ikekenet
         下载MP3到电脑  批量下载MP3和LRC到手机
        加载中..
        gg#Uh#i+&9tZ%

        HDn5*E(l+IDej,QSVYs.

        Strange Object May Be Remains of a Planet Torn Apart
        A long, thin object moving through our solar system may be the remains of a planet that was pulled apart, scientists say.
        Researchers say the planet was likely destroyed long ago when it moved either too far from or too close to the star it once orbited.
        The object is called 'Oumuamua, which means "messenger from afar" in the native Hawaiian language. A report on the recent findings appears in the journal Nature Astronomy.
        Scientists have been trying to understand more about 'Oumuamua since its discovery in 2017. Some have even proposed it may be an alien spacecraft. In the recently published research, astronomers Yun Zhang and Douglas Lin said computer predictions suggest the object was a piece of a planet or planetary building block. The planet might have been torn apart by its star's "tidal forces."
        'Oumuamua is the first object from another star system found passing through our solar system. It is about 400 meters long. Its shape, strange way of moving and lack of dust and gases suggest it is not a normal comet or asteroid.

        B0rHyj0cI5U3rZ[&

        奥陌陌.jpg
        When a smaller body passes near a much bigger one, tidal forces created by the larger body can destroy the smaller one. This is what happened when comet Shoemaker–Levy 9 came too close to the planet Jupiter in 1992.
        Zhang told the Reuters news agency that most planetary bodies are made of groups of rocks joined under the influence of gravity. In a way, they are similar to the sandcastles that children make at the beach, except that they are floating through space, Zhang said.
        "Their structure can be disrupted when the force acting on the individual 'sand particle' is larger than their mutual gravity," he added.
        Zhang noted that ocean tides on Earth are affected in this way. Tides result from the gravitational pulls of the sun and moon. In space, a planetary body that comes close enough to a star falls victim to its strong gravitational pull.
        Lin is an astrophysicist at the University of California, Santa Cruz. He said the star that destroyed 'Oumuamua's home world probably was one-tenth to eight-tenths of the mass of our sun. Or it might have been a rare kind of cool and dense star called a white dwarf, Lin added.
        The study suggests the existence of many objects formed this way.
        "We show the possibility of panspermia carried by these objects," Zhang said. Panspermia is the hypothesized spread of microorganisms or chemicals that support life on objects moving through space.
        'Oumuamua is continuing on its path out of our solar system.
        I'm Pete Musto.

        bZbP+vNK4povp[&z

        t*BD11IV3)A_

        FCyX8Tn*0aZ6o_MYp45BfTvKn=ONk1+a&t#mNDSe!N@v(@o.

        重点单词   查看全部解释    
        spacecraft ['speiskrɑ:ft]

        想一想再看

        n. 宇宙飞船

         
        except [ik'sept]

        想一想再看

        vt. 除,除外
        prep. & conj.

        联想记忆
        fell [fel]

        想一想再看

        动词fall的过去式
        n. 兽皮
        v

        联想记忆
        messenger ['mesindʒə]

        想一想再看

        n. 报信者,先驱

         
        tear [tiə]

        想一想再看

        n. 眼泪,(撕破的)洞或裂缝,撕扯
        vt.

        联想记忆
        acting ['æktiŋ]

        想一想再看

        n. 演戏,行为,假装 adj. 代理的,临时的,供演出

         
        spread [spred]

        想一想再看

        v. 伸展,展开,传播,散布,铺开,涂撒
        n.

         
        astronomy [əst'rɔnəmi]

        想一想再看

        n. 天文学

        联想记忆
        gravity ['græviti]

        想一想再看

        n. 重力,严重,庄重,严肃

        联想记忆
        affected [ə'fektid]

        想一想再看

        adj. 受影响的,受感动的,受疾病侵袭的 adj. 做

        联想记忆
        ?
        发布评论我来说2句

          最新文章

          可可英语官方微信(微信号:ikekenet)

          每天向大家推送短小精悍的英语学习资料.

          添加方式1.扫描上方可可官方微信二维码。
          添加方式2.搜索微信号ikekenet添加即可。
          日本一级大片在线播放 莎车县| 礼泉县| 朝阳县| 同心县| 定远县| 吐鲁番市| 涟水县| 乌鲁木齐县| 东城区| 长沙市| 南充市| 永年县| 临汾市| 穆棱市| 鄂托克前旗| 汉寿县| 扶沟县| 浙江省| 太仆寺旗| 阿拉善盟| 通榆县| 托克托县| 饶平县| 丁青县| 荆州市| 航空| 清流县| 甘德县| 乌海市| 津南区| 灯塔市| 龙泉市| 红河县| 双柏县| 凤庆县| 泗阳县| 祥云县| 新乡县| 麦盖提县| 莆田市| 雅江县| 江达县| 易门县| 阿克| 新竹市| 宜宾市| 周口市| 辽宁省| 伊金霍洛旗| 依兰县| 平泉县| 墨玉县| 新密市| 临洮县| 垦利县| 河北省| 图们市| 宜兴市| 武平县| 青岛市| 开平市| 七台河市| 福安市| 阳江市| 荔浦县| 南部县|