William Wilson Morgan

E1742369 UNEXPLORED

William Wilson Morgan was an American astronomer best known for co-developing the influential Morgan–Keenan (MK) stellar classification system that organizes stars by their spectral characteristics and luminosity.

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William Wilson Morgan canonical	1

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Morgan–Keenan stellar classification system → namedAfter → William Wilson Morgan ⓘ

subject linked to: Philip Keenan