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Galaxy

M90, Spiral Galaxy in Virgo

Target Type R. A. Dec. Constellation Magnitude Size M90 (NGC 4569) Spiral Galaxy 12h 36m 50s +13° 09′ 48″ Virgo +9.36 9.1×3.8 arcmin Overview On one night, 18 March 1781, Charles Messier discovered eight separate galaxies. M90 is one of those eight. At the time, astronomers weren’t aware of galaxies and so he classed it …

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M89, Elliptical Galaxy in Virgo

Target Type R. A. Dec. Constellation Magnitude Size M89 (NGC 4552) Elliptical Galaxy 12h 35m 40s +12° 33′ 22″ Virgo +9.67 8.1×8.0 arcmin Overview This bright, compact galaxy was discovered by Charles Messier on 18 March 1781, the same day that he discovered seven others. He didn’t know at the time what it was he’d …

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M91, Spiral Galaxy in Coma Berenices

Target Type R. A. Dec. Constellation Magnitude Size M91 (NGC 4548) Barred Spiral Galaxy 12h 35m 27s +14° 29′ 46″ Coma Berenices +10.0 5.5×4.5 arcmin Overview This barred spiral galaxy was discovered M91 but shrouded it in mystery when he recorded its coordinates incorrectly in his notes. Suggestions for the ‘real’ M91 have included a …

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