NGC 40 – The Bow-Tie Nebula
NGC 40 – The Bow-Tie Nebula NGC 40, known as the Bow-Tie Nebula, is a planetary nebula located in the constellation of Cepheus, about 3,500–4,000 light-years from Earth. It was discovered by William Herschel in 1788 and stands out for its slightly elliptical shape and smooth, diffuse appearance. Unlike other planetary nebulae with high contrast, […]
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