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探秘:神秘宇宙“黑洞”全面解析 (组图)(12)
2007-01-22 10:20:58 中华网论坛 发表评论
  
13892795_200701221022463496300.jpg

还有一种情况,是美国物理学家奥本海默(Julius Robert Oppenheimer,1904-1967)和斯奈德(Snyder)首先想到的:如果恒星的质量不变,并让它们不断收缩那么恒星的密度会越来越大,这样它的引力场也会越来越强。所以只要一直收缩,它迟早会变成一个连光都逃不出去的黑洞。比如太阳要是收缩到半径只有3千米的时候它就会变成一个黑洞。这个半径只有3千米的小圆球,密度却大得吓死你——一立方米厘米的体积里有200亿吨物质!太牛了!这两位仁兄根据爱因斯坦的广义相对论,分析了恒星在自身的引力作用下坍缩的过程,在1939年提出了比较准确的黑洞理论。所以,1939年,人们把它算作现代黑洞理论诞生的年份。
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