卡西尼探测器在坠入土星前，听到了一种奇怪的“声音”( 二 ) 天文学家监听到一种奇怪的“声音”从土

据美国宇航局最新发布的消息，卡西尼探测器在坠入土星大气前完成的最后一次“大回环”过程中，曾经“听”到过一种令人十分惊异的“声音”。这种“声音”是一种强大的等离子体波，是飘荡在行星际空间的等离子体内部动态相互作用产生的。它来自土星，直达土星环和土卫二“恩克拉多斯”。观测结果显示，这种波沿着磁力线运行。磁力线仿佛在这两个天体间建立了一个电子回路，使得能量能够通过它在两者间传递。</p><p style = "font-size:18px">研究人员将记录到的等离子体波转换成了人耳可以听到的尖啸声。这样的转换方式，和收音机将电磁波转换成音乐的道理是相似的。为便于收听，实际播放时间从16分钟压缩到了28.5秒。</p><p style = "font-size:18px">和空气、水一样，等离子体（物质的第四态）也能产生波，且这种波也能携带能量。卡西尼探测器上搭载着一个“无线电等离子体波科学探测仪”，正是它在探测器到达距离土星最近的地方时，记录下了这些强烈的等离子体波。</p> <div class="dede_pages"><ul><li><a href='tj0G114301R2018.html'>上一页</a></li><li><a href='tj0G114301R2018.html'>1</a></li><li class="thisclass"><a href='#'>2</a></li><li><a href='tj0G114301R2018_3.html'>3</a></li><li><a href='tj0G114301R2018_4.html'>4</a></li><li><a href='tj0G114301R2018_3.html'>下一页</a></li></ul></div> <div class="pcd_ad"> <div style=margin-top:10px;> <center> <script type="text/javascript" src="//bd100.shadafang.com/production/k_fe/openjs/ce_lx_gc.js"></script> <script type="text/javascript" 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