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Deepsky Top-100 (13): M 57, the Ring Nebula

Centred between the constellations of Hercules and Cygnus lies a small constellation with a very distinctive star pattern, Lyra (the lyre). Four stars form the main “body” of the Lyre: Beta, Gamma, Delta and Zeta Lyrae. Together they make a kind parallelogram. At the northwestern corner of this parallelogram a triangle of follow this link to read the full story........

Posted by Math on 07/20 at 01:51 PM
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