关于流星的15个小秘密
<p>1.<span word="The">The</span> <span word="most">most</span> <span word="famous">famous</span> <span word="and">and</span> <span word="spectacular">spectacular</span> <span word="meteor">meteor</span> <span word="shower">shower</span>, <span word="the">the</span> <span word="annual">annual</span> <span word="Perseids">Perseids</span>, <span word="will">will</span> <span word="peak">peak</span> <span word="on">on</span> <span word="August">August</span> 12<span word="th">th</span>.</p><p>一年一度的英仙座流星雨是最著名、最壮观的流星雨，一般在8月12日达到高峰。</p><p>2.<span word="The">The</span> <span word="Perseids">Perseids</span> <span word="are">are</span> <span word="also">also</span> <span word="called">called</span> <span word="the">the</span> "<span word="Tears">Tears</span> <span word="of">of</span> <span word="Saint">Saint</span> <span word="Lawrence">Lawrence</span>" <span word="after">after</span> <span word="a">a</span> <span word="martyred">martyred</span> <span word="Christian">Christian</span> <span word="deacon">deacon</span> <span word="whom">whom</span> <span word="the">the</span> <span word="Romans">Romans</span> <span word="burned">burned</span> <span word="to">to</span> <span word="death">death</span> <span word="on">on</span> <span word="an">an</span> <span word="outdoor">outdoor</span> <span word="iron">iron</span> <span word="stove">stove</span> <span word="in">in</span> <span word="A">A</span>.<span word="D">D</span>. 258.</p><p>英仙座流星雨也被称作“圣劳伦斯之泪”。这个称呼来源于公元前258年被罗马人烧死在大铁炉里的基督教殉道者圣劳伦斯。</p><p>3.<span word="Technically">Technically</span>, <span word="a">a</span> <span word="meteor">meteor</span> <span word="is">is</span> <span word="merely">merely</span> <span word="the">the</span> <span word="streak">streak</span> <span word="of">of</span> <span word="light">light</span> <span word="we">we</span> <span word="see">see</span> <span word="trailing">trailing</span> <span word="a">a</span> <span word="meteoroid">meteoroid</span>. <span word="A">A</span> <span word="meteoroid">meteoroid</span> <span word="is">is</span> <span word="any">any</span> <span word="interplanetary">interplanetary</span> <span word="object">object</span> <span word="bigger">bigger</span> <span word="than">than</span> <span word="a">a</span> <span word="speck">speck</span> <span word="of">of</span> <span word="dust">dust</span> <span word="and">and</span> <span word="smaller">smaller</span> <span word="than">than</span> <span word="an">an</span> <span word="asteroid">asteroid</span>.</p><p>严格说来，“流星”仅仅指“流星体”身后的那一道光，也就是我们看着划过天空那一道。而“流星体”则可以是太阳系内任意一个比尘埃大但比小行星小的天体。</p><p>4.<span word="Once">Once</span> <span word="it">it</span> <span word="hits">hits</span> <span word="Earth">Earth</span>, <span word="a">a</span> <span word="meteoroid">meteoroid</span> <span word="suffers">suffers</span> <span word="an">an</span> <span word="identity">identity</span> <span word="crisis">crisis</span> <span word="and">and</span> <span word="becomes">becomes</span> <span word="a">a</span> <span word="meteorite">meteorite</span>.</p><p>流星体一旦撞上地球，就变成了“陨石”。</p><p>5.<span word="Chase">Chase</span> <span word="that">that</span>, <span word="Superman">Superman</span>: <span word="Perseid">Perseid</span> <span word="meteoroids">meteoroids</span> <span word="enter">enter</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span> <span word="at">at</span> <span word="approximately">approximately</span> 130,000 <span word="miles">miles</span> <span word="per">per</span> <span word="hour">hour</span>.</p><p>英仙座流星雨的流星体进入大气层的速度约为130,000英里/时（209,215公里/时）。</p><p>6.<span word="Meteorites">Meteorites</span> <span word="contain">contain</span> <span word="the">the</span> <span word="oldest">oldest</span> <span word="known">known</span> <span word="rocks">rocks</span> <span word="in">in</span> <span word="the">the</span> <span word="solar">solar</span> <span word="system">system</span>, <span word="as">as</span> <span word="well">well</span> <span word="as">as</span> <span word="minerals">minerals</span> <span word="that">that</span> <span word="formed">formed</span> <span word="around">around</span> <span word="other">other</span> <span word="stars">stars</span> <span word="perhaps">perhaps</span> <span word="billions">billions</span> <span word="of">of</span> <span word="years">years</span> <span word="before">before</span> <span word="our">our</span> <span word="solar">solar</span> <span word="system">system</span> <span word="was">was</span> <span word="born">born</span>.</p>
页:
[1]