The planetary nebula NGC 4361 in Corvus, in an H-alpha image from the Lowell
Observatory 1.1-meter telescope. Because of its symmetry resembling a spiral
in the outer parts, and its location south of the Virgo galaxy cluster,
it can be mistaken for a galaxy on casual examination of photographs
(including one attempt by an astronomer too eminent to name here, who tried
to sneak it into a galaxy-classification exercise when I was in grad school).
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