论文出处： https://www.nature.com/articles/s41550-026-02905-7 光谱特徵分析： https://i.urusai.cc/zDHtF.jpg Sugars are essential biomolecules, serving as metabolic fuels, nucleic acid backbone components and structural or energy-storage polymers. A central question in origin-of-life research is how monosaccharides formed on the primitive Earth, as laboratory experiments under prebiotic conditions yield insufficient concentrations. The detection of ribose, glucose and other monosaccharides in asteroids and meteorites suggests an exogenous origin, possibly in the interstellar medium (ISM) before meteoritic parent-body formation. However, no sugar has been observed in the ISM so far. Here we report the discovery of erythrulose, a chiral four-carbon ketose, in the ISM. The detection was achieved through ultrasensitive, broadband spectral surveys of the Galactic Centre molecular cloud G+0.693.027, using the Yebes 40 and IRAM 30 telescopes. Erythrulose appears to be at least eight times more abundant than analogous three-carbon sugars, which remain undetected in our ultrasensitive observations. Quantum chemical and astrochemical models indicate that erythrulose forms efficiently on interstellar dust grains from simpler two-carbon aldehydes and alcohols. As ketoses readily isomerize into aldoses in aqueous conditions, interstellar erythrulose could have contributed to the sugar inventory available for early metabolic and replication processes. 醣类是重要的生物分子，它们作为代谢燃料、核酸骨架成分以及结构或能量储存聚合物发 挥作用。生命起源研究的核心问题之一是原始地球上单醣是如何形成的，因为在生命起源 前的实验室条件下进行的实验无法获得足够浓度的单醣。在小行星和陨石中检测到核糖、 葡萄糖和其他单醣显示它们可能起源於外源，或许是在陨石母体形成之前的星际介质（ ISM）中。然而，迄今为止，尚未在星际介质中观测到任何醣类。 本文报导了在星际介质中发现赤藻醣酮糖，一种手性四碳酮糖。这项发现是透过使用 耶贝斯40公尺望远镜和IRAM 30公尺望远镜对银河系中心分子云G+0.693.027进行超灵敏 宽频光谱巡天观测实现的。 赤藻醣酮糖的丰度似乎至少是类似三碳糖的八倍，而後者在我们的超灵敏观测中仍然 未被侦测到。量子化学和天文化学模型表明，赤藻醣酮糖能够高效地在星际尘埃颗粒上 由简单的双碳醛和醇转化而来。由於酮糖在水溶液中易异构化为醛糖，星际赤藻醣酮糖可 能为早期代谢和复制过程提供了糖分来源。 -- https://www.youtube.com/watch?v=m-QXmqX7k8Q 刘德华 悟 电影【新少林寺】主题曲 https://youtu.be/dLRLWy7bKS4 作曲：赵钦 作词：刘德华 《金刚总持祈请文》 编曲：Adam Lee．饰坠．陈德建 蒋巴桑波 (第七世噶玛巴确扎嘉措之根本上师) 着 监制：陈德建．李安修 不要把金王冠织入鸟巢中 招惹微风与猎枪是不明智的 依常断见所立宗 能坏慧命因缘法 精勤十善一夜尽 纵生天人多阐提 --

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