M101 was also one of the original spiral nebulae observed by Lord Rosse's large 19th century telescope, the Leviathan of Parsontown.
M101还是罗斯爵士用19世纪的大型望远镜，“帕森镇的巨兽”，所发现的最早的螺旋星云之一。
M101 was also one of the original spiral nebulae observed by Lord Rosse's large 19th century telescope, the Leviathan of Parsontown.
M101还是罗斯爵士用19世纪的大型望远镜，“帕森镇的巨兽”，所发现的最早的螺旋星云之一。
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