Sagittarius săjĭtâr´ēəs [key] [Lat.,=the archer], constellation lying on the ecliptic (the sun's apparent path through the heavens) between Scorpius and Capricornus; it is one of the constellations of the zodiac. It is traditionally depicted as a centaur drawing his bow to release an arrow. The constellation contains a configuration of stars known as the Milk Dipper. It also contains the Lagoon, Horseshoe, and Trifid nebulae. The center of our galaxy, the Milky Way, lies in Sagittarius, and Sagittarius A*, a compact radio source at the galaxy's center, is believed to be a supermassive black hole. The constellation reaches its highest point in the evening sky in August.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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