Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  HD85161  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
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M81 and M82 (Mosaic) (M81 and M82 (Mosaic)), Joe Santacroce
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M81 and M82 (Mosaic) (M81 and M82 (Mosaic))

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M81 and M82 (Mosaic) (M81 and M82 (Mosaic)), Joe Santacroce
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M81 and M82 (Mosaic) (M81 and M82 (Mosaic))

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Description

M81 - Bodes Galaxy
Distance to Earth: 11.74 million light years
Radius: 45,000 light years

Messier 81 is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major. It has a D₂₅ isophotal diameter of 29.44 kiloparsecs. Wikipedia

M82 - Cigar Galaxy
Distance to Earth: 11.42 million light years
Radius: 18,500 light years

Messier 82 is a starburst galaxy approximately 12 million light-years away in the constellation Ursa Major. It is the second-largest member of the M81 Group. Wikipedia

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M81 and M82 (Mosaic) (M81 and M82 (Mosaic)), Joe Santacroce