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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">地球生命或是"早产儿" 未来将诞生更多外星生命 </h1> <p class="xg1"> 时间：2016-8-2 09:48<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1617)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4685&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 网易科技</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>据每日邮报报道，长期以来，科学家始终在搜索外星生命存在的证据，但现在依然不知道是否有其他生命存在于地球之外，或地球上是否拥有宇宙中唯一的生命形态。现在，哈佛大学和牛津大学科学家称，地球生命或是宇宙早产 ...</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"><span style="color: rgb(67, 67, 67); font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; line-height: 24px; background-color: rgb(251, 251, 251);">据每日邮报报道，长期以来，科学家始终在搜索外星生命存在的证据，但现在依然不知道是否有其他生命存在于地球之外，或地球上是否拥有宇宙中唯一的生命形态。</span><span style="font-weight: 700; font-size: 16px; color: rgb(67, 67, 67); font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; line-height: 24px; background-color: rgb(251, 251, 251);">现在，哈佛大学和牛津大学科学家称，地球生命或是宇宙早产儿，未来将诞生更多外星生命。</span><div><div style="text-align: center;"><p><a href="data/attachment/portal/201608/02/094426kqz93rnvkfjakhuv.jpg" target="_blank"><img src="data/attachment/portal/201608/02/094426kqz93rnvkfjakhuv.jpg"></a></p></div><div><span style="font-weight: 700; font-size: 16px; color: rgb(67, 67, 67); font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; line-height: 24px; background-color: rgb(251, 251, 251);"><br></span></div><div><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">研究人员分析了生命诞生的必要因素，并认为行星附近的恒星寿命是生命能否诞生的最重要原因。有些科学家认为，外星生命可能比地球生命早数十亿年前诞生，但哈佛大学和牛津大学的科学家认为情况恰好相反。</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">哈佛-史密森天体<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>学中心的艾维·罗卜（Avi Loeb）表示：“如果你问生命何时最有可能诞生？你可能会天真地说‘现在’。但我们发现，在遥远的未来，生命诞生的几率将更高。”</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">科学家解释称，生命的出现需要依赖行星绕转的恒星。这不仅是因为只有恒星存在足够长久，行星才能形成，还因为它需要足够长的时间冷却，并在表面产生液态水。大爆炸发生后，大约3000万年后才形成首批恒星，而我们的地球直到46亿年前才诞生。</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">研究人员称：“生命出现需要恒星有两大原因：第一恒星可以产生重元素（碳、氧、铁等），它们是岩石行星和生命分子构成的必要成分。第二，恒星需要为行星表面形成生命的化学物质提供热源。每颗恒星周围都存在宜居区，那里的行星表面温度允许液态水存在。”</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">通过分析，研究人员认为，质量越高的恒星寿命越短，这些比太阳质量高3倍的恒星在进化出生命之前就已经死去。但是质量仅有太阳10%的更小恒星却可生存10万亿年，为生命出现提供了足够长的进化时间。随着时间推移，生命出现的机会也更大。与现在相比，将来产生其他生命形态的几率将增高1000倍。（ocer）</p><p style="text-align: center;"><a href="data/attachment/portal/201608/02/094434x8ne8e32sco80ekn.jpg" target="_blank"><img src="data/attachment/portal/201608/02/094434x8ne8e32sco80ekn.jpg"></a></p><p class="MsoNormal" align="left" style="text-align: center;"><span style="mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt;mso-bidi-language:AR">欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>网站<span lang="EN-US">(oecr.com)</span>编辑团队为您精选行业动态，科技资讯，技术解析，光电<a href="http://www.oecr.com/portal.php?mod=list&catid=62" target="_blank" class="relatedlink">科普</a>等精彩内容。<span lang="EN-US"><o:p></o:p></span></span></p></div></div></td></tr></table> <!--[diy=diycontentbottom]--><div 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