| 11. | After the initial name of Serpens, it was subsequently catalogued as Palomar 5.
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| 12. | Editors : Serpens in 18th graf is CQ
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| 13. | Serpens also contains a few Chinese constellations.
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| 14. | Serpens Cauda's boundaries lie between right ascensions of and and declinations of and.
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| 15. | As the galactic plane passes through it, Serpens Cauda contains many massive OB stars.
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| 16. | Serpens Cauda contains a few synchrotron jet.
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| 17. | Serpens South is a star cluster embedded in a dense molecular filament containing numerous protostars.
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| 18. | Serpens is a most peculiar constellation.
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| 19. | Although it's not overwhelmingly bright, Serpens is readily visible under reasonably dark skies.
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| 20. | By 1836, even the letter S had only been used in one constellation, Serpens.
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