An Etymological Dictionary of Astronomy and Astrophysics
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A → spiral galaxy in the constellation → Virgo. It was the first galaxy whose rotation was detected. Also named M104 and NGC 4594.

Sp. sombrero "broad-brimmed hat," originally "umbrella or parasol," from sombra "shade," from L.L. subumbrare, from → sub- "under" + umbra "shade, shadow;" → galaxy.

Kahkešân, → galaxy; sombrero, Sp., as above.