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250 万年前的超新星爆发可能影响了地球病毒的演化

2025-02-21 22:06 by 诺比与平行宇宙的钥匙

地球上的生命演化持续受到来自地表及宇宙射线辐射的影响。邻近地球的超新星爆发可能会使地表接收的辐射强度提高好几个数量级,对生命演化产生深远影响。超新星爆发会将放射性铁-60 传播到地球。研究人员发现,距今约 200 至 300 万年前,一颗邻近地球的恒星产生超新星爆发,释放出放射性铁-60。而根据一项针对非洲东非裂谷湖泊病毒多样性的研究显示,该区域的病毒在约 250 万年前经历了显著的多样性变化。虽然目前无法直接证实这两者之间的关联,但它们出现在相同的时间,研究团队认为值得关注。

天文馆:250萬年前鄰近的超新星爆發可能影響地球病毒演化
Astrophysical Journal Letters:Life in the Bubble: How a Nearby Supernova Left Ephemeral Footprints on the Cosmic-Ray Spectrum and Indelible Imprints on Life

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250 万年前的超新星爆发可能影响了地球病毒的演化

2025-02-21 22:06 by 诺比与平行宇宙的钥匙

地球上的生命演化持续受到来自地表及宇宙射线辐射的影响。邻近地球的超新星爆发可能会使地表接收的辐射强度提高好几个数量级,对生命演化产生深远影响。超新星爆发会将放射性铁-60 传播到地球。研究人员发现,距今约 200 至 300 万年前,一颗邻近地球的恒星产生超新星爆发,释放出放射性铁-60。而根据一项针对非洲东非裂谷湖泊病毒多样性的研究显示,该区域的病毒在约 250 万年前经历了显著的多样性变化。虽然目前无法直接证实这两者之间的关联,但它们出现在相同的时间,研究团队认为值得关注。

天文馆:250萬年前鄰近的超新星爆發可能影響地球病毒演化
Astrophysical Journal Letters:Life in the Bubble: How a Nearby Supernova Left Ephemeral Footprints on the Cosmic-Ray Spectrum and Indelible Imprints on Life

#科学

BY Solidot


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