【第769章】 超新星爆炸(1 / 2)

执掌龙宫 敖夜 0 字 2021-04-02

同为科学家的歌迪亚心中一紧,尤里米勒的身份和学识不用说了,连他都表现的如此绝望,看来地球的确是遇到了大麻烦。</p> </p>

“众所周知,我曾联合地球上最聪明的大脑霍金先生,还有脸书创始人波克扎格先生,在去年四月份,宣布开展一项计划,称为‘突破摄星’。”</p> </p>

歌迪亚浑身一震,失声道:“天哪,难道你们真的现了威胁到人类的外星智慧生命了吗?”</p> </p>

在2o15年7月,霍金曾宣布启动一项人类历史上规模最大的外星智慧生命的搜索行动,名为“突破聆听”。这项行动将通过扫描宇宙的方式进行搜寻,历时十年,并将耗费一亿美金。</p> </p>

但在2o16年4月,与尤里米勒联合宣布,称为‘突破摄星’计划。计划的内容简单来说,就是用纳米技术开制造数千个邮票大小的纳米小型太空飞船,用太阳帆技术加到光的2o%,飞往我们最近的恒星系半人马座阿尔法星,并回照片。</p> </p>

半人马座阿尔星,是距离太阳最近的恒星之一,为4.2光年。这是一个三星系统,拥有三颗恒星,其中两颗形成双星系统运行,另外一颗距离较远,不会形成太大的干扰。</p> </p>

由于距离地球最近,所以在很多中,都认为在半人马座阿尔星存在宇宙文明。刘慈欣的著名科幻中三体人的家园,就是一个三星系统,灵感就来自于半人马阿尔法星。</p> </p>

还有一个原因,使半人马座阿尔星频繁引起关注。那就是在其比邻星运行的环境中,有一颗可能具有适合生命繁衍的星球比邻星b,被称为地球的兄弟。</p> </p>

基于以上原因,歌迪亚很自然的联想到,人马座存在外星智慧,且对地球造成威胁。</p> </p>

尤里米勒苦笑着摇头,解释道:“并非如此,歌迪亚女士。突破摄星计划只是掩人耳目的幌子,我们并没有现任何的外星智慧。”</p> </p>

“那么,突破摄星计划的真正目的是什么?”</p> </p>

“是侦查!”</p> </p>

“侦查外星智慧?或者宜居星球?”</p> </p>

“都不是。”</p> </p>

突破摄星计划,在对大众的宣传中,是以考察半人马座星系环境为目标。但其真正的目的,却是去做一个哨兵。</p> </p>

“你们到底在担心什么?”</p> </p>

尤里米勒深深的叹了口气,语气无限悲凉道:“我们在担心宇宙中最强大的力量。”然后一一所过众人,低声道:“新星爆炸。”</p> </p>

“新星爆炸?”</p> </p>

歌迪亚博士有些愕然,她虽然和尤里在研究方向不同,但作为一名博学的学者,这并不妨碍她了解新星爆炸表达的意思。</p> </p>

所谓新星爆炸,是宇宙中的一种现象。</p> </p>

巨大质量恒星的内部温度远高于表面,最大的巨星核心温度过1o亿兆。对于一颗稳定的恒星,核心温度的理论上限为6o亿k。过这个温度,恒星内部物质射出的光子能量将高达到可以在互相碰撞时转化成正负电子对,这样的反应会让恒星失去稳定,最终在一场巨大的爆炸中毁灭。</p> </p>

恒星内部主要依靠核聚变产生能量对抗恒星本身万有引力来维持稳定:能量释放形成的向外的扩张力与恒星万有引力制衡。恒星越大所需要的能量越多,消耗氢就越快。然后形成的氦继续聚变形成碳原子和氧原子,聚变程度取决于恒星的质量。</p> </p>

随着恒星内核中质量堆积,引力越来越大,核聚变原料变少,当核聚变的能量和游离电子之间的“简并“提供的力无法抗拒万有引力时,恒星会突然坍缩,度达到45ooo英里每秒以上,内核温度迅提升。</p> </p>

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