Definition of Ophiuchus
: a large northern constellation that is visible between the constellations of Scutum and Hercules and that is represented by the figure of a man grasping a snake (the constellation Serpens) Thomas Greene of the University of Hawaii and Charles Lada of the Smithsonian Astrophysical Observatory have studied five protostars in Ophiuchus, each about 100,000 years old. — Astronomy, September 1997
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First Known Use of ophiuchus
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