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来自MSN
9月
天文学家在银河中心附近,发现神秘的“奇异射电圈”
天文学家将它们命名为“奇异射电圈”(Odd Radio Circles, ORCs)。 目前已知的ORCs数量较少,但最近发现了一个新的ORC,打破了所有已知的规则。
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