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总结
围绕“生命如何在地球出现”的长期疑问，报道称研究团队开展了新的前生物化学实验，发现某些简单分子在特定环境条件下可自发生成与RNA相关的关键组分，甚至形成更长的链段，从而在不依赖蛋白质酶的情况下提高了RNA自然产生的可行性，为“RNA世界”假说增添证据。与此同时，关于古老小行星/陨石样本及重大撞击事件的研究也被提及，提示外来天体物质可能为早期地球提供原料，并引发对火星等行星是否具备类似化学路径的讨论。研究者称这并非定论，仍需更多实验验证。
正文
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