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Puppis
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Puppis

astronomy
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Written by
Erik Gregersen
Erik Gregersen is a senior editor at Encyclopaedia Britannica, specializing in the physical sciences and technology. Before joining Britannica in 2007, he worked at the University of Chicago Press on the...
Erik Gregersen
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Puppis, constellation in the southern sky at about 8 hours right ascension and 30° south in declination. Its brightest star is Zeta Puppis, the nearest and brightest blue supergiant star, with a magnitude of 2.2. The largest known emission nebula, the Gum Nebula, is found here and in the neighbouring constellation Vela. This constellation was originally part of the much larger Argo Navis, which represented the ship Argo, in which Jason and the Argonauts sailed to retrieve the Golden Fleece. The French astronomer Nicolas Louis de Lacaille, in his Coelum Australe Stelliferum (“Star Catalog of the Southern Sky,” 1763), broke up Argo Navis into the smaller constellations of Carina, Puppis, and Vela.

Erik Gregersen