天文学家首度利用韦伯太空望远镜，针对蝘蜓座 I 分子云（Chamaeleon I molecular cloud）绘制出三种星际冰（水、二氧化碳、一氧化碳）的分布图，深入解析恒星诞生前的化学环境。这项研究不仅提升了空间解析度，也大幅增加样本数量，为理解恒星与行星的形成提供了关键新线索。在宇宙中寒冷的分子云中，这些充满气体与尘埃的区域正是恒星诞生的摇篮。微小的尘埃粒子常被一层层冰所覆盖，这些冰包含水、二氧化碳与一氧化碳等简单分子，是恒星与行星诞生过程中不可或缺的原料。如今，天文学家首次成功绘制出这些冰在整个分子云中的分布图，为我们提供了一扇前所未有的窗口，得以一窥恒星诞生之前的化学环境。
Nature Astronomy：Cospatial ice mapping of H2O with CO2 and CO across a molecular cloud with JWST/NIRCam
天文学家首度利用韦伯太空望远镜，针对蝘蜓座 I 分子云（Chamaeleon I molecular cloud）绘制出三种星际冰（水、二氧化碳、一氧化碳）的分布图，深入解析恒星诞生前的化学环境。这项研究不仅提升了空间解析度，也大幅增加样本数量，为理解恒星与行星的形成提供了关键新线索。在宇宙中寒冷的分子云中，这些充满气体与尘埃的区域正是恒星诞生的摇篮。微小的尘埃粒子常被一层层冰所覆盖，这些冰包含水、二氧化碳与一氧化碳等简单分子，是恒星与行星诞生过程中不可或缺的原料。如今，天文学家首次成功绘制出这些冰在整个分子云中的分布图，为我们提供了一扇前所未有的窗口，得以一窥恒星诞生之前的化学环境。
Nature Astronomy：Cospatial ice mapping of H2O with CO2 and CO across a molecular cloud with JWST/NIRCam
天文館：首次繪製星際冰地圖，揭開恆星誕生的化學起點
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Bitcoin is a decentralized digital currency that you can buy, sell and exchange directly, without an intermediary like a bank. Bitcoin’s creator, Satoshi Nakamoto, originally described the need for “an electronic payment system based on cryptographic proof instead of trust.” Each and every Bitcoin transaction that’s ever been made exists on a public ledger accessible to everyone, making transactions hard to reverse and difficult to fake. That’s by design: Core to their decentralized nature, Bitcoins aren’t backed by the government or any issuing institution, and there’s nothing to guarantee their value besides the proof baked in the heart of the system. “The reason why it’s worth money is simply because we, as people, decided it has value—same as gold,” says Anton Mozgovoy, co-founder & CEO of digital financial service company Holyheld.
