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总结
NASA的一项X射线观测卫星对银河系中心开展观测并对数据进行再分析，发现围绕超大质量黑洞“人马座A*”的弥散X射线结构与冲击波等迹象，指向其在较近天文时期曾出现更频繁、更强烈的爆发与吸积活动，向周围气体与尘埃注入能量并重塑局部环境。研究认为该黑洞目前相对宁静，但其更活跃的“近期过去”可帮助理解黑洞反馈机制、星际介质演化及银河系历史。
正文
NASA X-ray spacecraft reveals the shockingly violent history of the Milky Way's supermassive black hole Space The Milky Way's Black Hole Is Quiet Now, But Its Recent Past Was Far More Active Universe Today Saturday Citations: Missing dinosaurs, quiescent black holes and infectious fungi Phys.org Black hole at the center of the Milky Way hides explosive past Universe Space Tech NASA's Spacecraft Uncovers New Insights About Milky Way's Supermassive Black Hole NDTV
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