[2878] Supernova

Title Text:They’re a little cagey about exactly where the crossover point lies relative to the likelihood of devastating effects on the planet. Origin:https://xkcd.com/2878/ https://www.explainxkcd.com/wiki/index.php/2878:_Supernova 超新星 他们对与超新星距离与地球受到毁灭性影响的交点在哪有些含糊其辞。 https://xkcd.in/comic?lg=cn&id=2878 超新星发生在重星再也无法产生足够的能量来抵抗自身引力时,例如因为燃料耗尽(II型)或因为从伴星处吸积了过多质量(Ia型)。坍… Read more

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