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Ptolemy Cluster - Definition and Overview |
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The Ptolemy Cluster (also known as Ptolemy's Cluster, the Scorpion's Tail, Open Cluster M7, Messier Object 7, Messier 7, M7, or NGC 6475) is an open cluster in the Scorpius constellation. It was known to Ptolemy by 130 AD. M7 is a large and brilliant group, easily detected with the naked eye.
External links
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Example Usage of Ptolemy |
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EQR_: @Ptolemy_I フルフルのふぶき |
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tempre_: @Ptolemy_I ”っ[珊瑚の指輪]” って書こうと思ったけど、雷も鳴ってるから直撃したら二倍ダメージだ＼(^o^)／ |
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ptolemy: ...just accidently gave myself spinal chills by accurately imagining chewing on sand - try it! it seems to work |
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