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哈勃拍到巨型发光“绿斑”


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这个绿色天体被称为汉妮天体(Hanny’s Voorwerp,Voorwerp是荷兰语中“物体”的意思),可以说是宇宙中最神秘的天体之一。1月10日美国天文学会第217次会议上公开的哈勃太 空望远镜拍摄到的精细照片和X光观测数据,终于揭开了汉妮天体的神秘面纱。科学家认为,IC2497的内核里有一个巨大的黑洞,曾经吞噬掉了各种气体和星体,并释放出两股相反的炙热气体和高能辐射。这种活跃的星系也被称为类星体。当类星体发出的辐射击中气体云时,就会激发氧原子,使气体云发出绿色的光芒。

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