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科技日报北京3月12日电(采访人员张梦然)英国《自然》杂志11日发表的一项天文学研究称 , 科学家在超高温系外行星的大气中 , 发现了其可能会下“铁雨”的信号 。 对铁谱线和行星昼夜交替的观测表明 ,…

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