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Gold on Earth came from Neutron Stars

机译:地球上的金子来自中子星

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The origin of heavy elements like gold, mercury, platinum, uranium, etc., has remained a mystery for a long time, mainly because these elements cannot be produced in stars in course of their evolution by a process known as 'stellar nucleosynthesis'. Only elements up to iron are formed in this process. Elements heavier than iron are believed to be produced in supernovas - violent explosions that mark the end of massive stars. On becoming a supernova, the star releases very large amounts of energy as well as neutrons, which allows elements heavier than iron, such as uranium and gold to be formed and expelled out into space. Our Sun is believed to have been created from debris thrown out by an earlier supernova explosion and that is why we have heavy elements like gold existing on Earth.
机译:长期以来,诸如金,汞,铂,铀等重元素的起源一直是个谜,这主要是因为这些元素在其演化过程中无法通过称为“星状核合成”的过程在恒星中产生。在此过程中仅形成铁元素。据信,比铁重的元素是在超新星中产生的-剧烈爆炸标志着大质量恒星的终结。成为超新星后,恒星会释放出非常大量的能量以及中子,这使铀和金等比铁重的元素得以形成并排入太空。我们的太阳被认为是由较早的超新星爆炸所抛出的碎片所创造的,这就是为什么我们地球上存在诸如金之类的重元素。

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  • 来源
    《Science and Culture》 |2016年第8期|273-274|共2页
  • 作者

    Biman Basu;

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