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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">数十亿年后发生的宇宙碰撞可能会使地球从银河系中消失 </h1> <p class="xg1"> 时间：2019-1-4 10:16<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(849)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=7352&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>据外媒CNET报道，目前太空中对地球构成最大威胁的可能是一些未被发现的小行星。但是在更大范围内观察宇宙的天体物理学家警告说，另一种碰撞也可能在遥远的未来影响我们的星球。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 据外媒CNET报道，目前太空中对地球构成最大威胁的可能是一些未被发现的小行星。但是在更大范围内观察宇宙的天体<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>学家警告说，另一种碰撞也可能在遥远的未来影响我们的星球。</div><div><br></div><div> 由英国杜伦大学研究人员领导的一个小组表示，另一个与银河系碰撞的星系的威胁可能比以前想象的要早得多，并可能使我们整个太阳系向新的方向发展。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201901/04/101617xgsh7hgjdjh57ond.png" target="_blank"><img src="data/attachment/portal/201901/04/101617xgsh7hgjdjh57ond.png"></a></p></div><div><br></div><div> 杜伦大学计算宇宙学研究所的博士后研究员Marius Cautun在一篇文章中说道：“我们不可能毫发无损地逃离两个星系之间的撞击，这可能会让我们从银河系中进入星际空间。” 相关研究论文近日在《皇家天文学会月刊》(MNRAS)上发表，Cautun是这篇论文的主要作者。</div><div><br></div><div> 对我们来说幸运的是，银河系与被称为大麦哲伦星云（LMC）的小星系之间的这种碰撞可能在20亿年内不会发生。 “虽然与人类一生相比，20亿年是一个非常长的时间，但在宇宙时间尺度上却是非常短暂的时间，”Cautun表示。</div><div><br></div><div> LMC是实际围绕银河系运行的一组较小的卫星星系之一。新的计算表明它的暗物质是此前科学家认为的两倍，以前所有未被发现的物质都可能意味着它的速度减慢并且无法逃脱银河系的引力。科学家表示，这次碰撞还可以唤醒银河系的休眠黑洞，这个黑洞将立即开始吞噬附近的气体，并在规模上增长一个数量级。</div><div><br></div><div> “除非发生任何灾难，例如对太阳系造成的重大干扰，否则我们的后代（如果有的话）都会有眼福：宇宙烟火的壮观展示，因为我们银河系中心新近被唤醒的超大质量黑洞通过发射喷流极其明亮的高能辐射，“共同作者和杜伦大学教授Carlos Frenk表示。</div><div><br></div><div><br></div><div><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" 255);"="" style="text-align: center; word-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); font-family: Tahoma, "Microsoft Yahei", Simsun; background-color: rgb(255, 255, 255);"><b microsoft="" yahei",="" simsun;="" word-wrap:="" normal;"="" style="word-wrap: normal;"><font size="5" color="#f00000" style="word-wrap: 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