科学家在银河系中发现一个违反常识的黑洞
<p><span word="A">A</span> <span word="new">new</span> <span word="black">black</span> <span word="hole">hole</span> <span word="search">search</span> <span word="method">method</span> <span word="has">has</span> <span word="just">just</span> <span word="yielded">yielded</span> <span word="fruit">fruit</span>, <span word="and">and</span> <span word="boy">boy</span> <span word="is">is</span> <span word="it">it</span> <span word="juicy">juicy</span>. <span word="Astronomers">Astronomers</span> <span word="have">have</span> <span word="found">found</span> <span word="a">a</span> <span word="stellar">stellar</span>-<span word="mass">mass</span> <span word="black">black</span> <span word="hole">hole</span> <span word="clocking">clocking</span> <span word="in">in</span> <span word="at">at</span> <span word="around">around</span> 70 <span word="times">times</span> <span word="the">the</span> <span word="mass">mass</span> <span word="of">of</span> <span word="the">the</span> <span word="Sun">Sun</span> - <span word="but">but</span> <span word="according">according</span> <span word="to">to</span> <span word="current">current</span> <span word="models">models</span> <span word="of">of</span> <span word="stellar">stellar</span> <span word="evolution">evolution</span>, <span word="its">its</span> <span word="size">size</span> <span word="is">is</span> <span word="impossible">impossible</span>, <span word="at">at</span> <span word="least">least</span> <span word="in">in</span> <span word="the">the</span> <span word="Milky">Milky</span> <span word="Way">Way</span>.</p><p>一个新的搜寻黑洞的方法已经证明有效，而且收获颇丰。天文学家发现了一个黑洞，质量大约是太阳的70倍，但根据目前恒星演化的模型来看，至少在银河系中这种体积是不可能存在的。</p><p><span word="The">The</span> <span word="chemical">chemical</span> <span word="composition">composition</span> <span word="of">of</span> <span word="our">our</span> <span word="galaxy">galaxy</span>'<span word="s">s</span> <span word="most">most</span> <span word="massive">massive</span> <span word="stars">stars</span> <span word="suggests">suggests</span> <span word="that">that</span> <span word="they">they</span> <span word="lose">lose</span> <span word="most">most</span> <span word="of">of</span> <span word="their">their</span> <span word="mass">mass</span> <span word="at">at</span> <span word="the">the</span> <span word="end">end</span> <span word="of">of</span> <span word="their">their</span> <span word="lives">lives</span> <span word="through">through</span> <span word="explosions">explosions</span> <span word="and">and</span> <span word="powerful">powerful</span> <span word="stellar">stellar</span> <span word="winds">winds</span>, <span word="before">before</span> <span word="the">the</span> <span word="star">star</span>'<span word="s">s</span> <span word="core">core</span> <span word="collapses">collapses</span> <span word="into">into</span> <span word="a">a</span> <span word="black">black</span> <span word="hole">hole</span>.</p><p>银河系中最大的恒星的化学成分表明，在恒星的核心坍缩成黑洞之前，它们在生命的最后阶段会通过爆炸和猛烈的恒星风失去大部分质量。</p><p><span word="The">The</span> <span word="hefty">hefty</span> <span word="stars">stars</span> <span word="in">in</span> <span word="the">the</span> <span word="mass">mass</span> <span word="range">range</span> <span word="that">that</span> <span word="could">could</span> <span word="produce">produce</span> <span word="a">a</span> <span word="black">black</span> <span word="hole">hole</span> <span word="are">are</span> <span word="expected">expected</span> <span word="to">to</span> <span word="end">end</span> <span word="their">their</span> <span word="lives">lives</span> <span word="in">in</span> <span word="what">what</span> <span word="is">is</span> <span word="called">called</span> <span word="a">a</span> <span word="pair">pair</span>-<span word="instability">instability</span> <span word="supernova">supernova</span> <span word="that">that</span> <span word="completely">completely</span> <span word="obliterates">obliterates</span> <span word="the">the</span> <span word="stellar">stellar</span> <span word="core">core</span>. <span word="So">So</span> <span word="astronomers">astronomers</span> <span word="are">are</span> <span word="scratching">scratching</span> <span word="their">their</span> <span word="heads">heads</span> <span word="trying">trying</span> <span word="to">to</span> <span word="figure">figure</span> <span word="out">out</span> <span word="how">how</span> <span word="the">the</span> <span word="black">black</span> <span word="hole">hole</span> - <span word="named">named</span> <span word="LB">LB</span>-1 - <span word="got">got</span> <span word="so">so</span> <span word="chonky">chonky</span>.</p><p>在能产生黑洞的质量范围内的超大恒星预计在毁灭之后会成为不稳定对超新星，恒星的核心完全摧毁。所以天文学家也摸不着头脑，想弄清楚这个名为<span word="LB">LB</span>-1的黑洞为何如此巨大。</p>
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