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超新星爆发可能导致了至少两次地球大规模灭绝事件
研究表明靠近地球的超新星爆发可能导致了至少两次大规模灭绝事件。研究人员认为,分别发生在 3.72 亿年前和 4.45 亿年前的晚泥盆纪和奥陶纪灭绝事件是地球附近的超新星爆发导致的。奥陶纪灭绝事件杀死了 60% ...
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Trans troops ban blocked
Return to Earth
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Iguana migration study
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Retires after 15 seasons
JFK files released
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