Sagittarius constellation from Johann Bayer's star atlas Uranometria Omnium Asterismorum, 1603. Sagittarius is a constellation of the zodiac, the one containing the galactic centre. Its name is Latin for archer. Sagittarius is commonly represented as a centaur drawing a bow. It spans the 240-270th degree of the zodiac, between 234.75 and 270 degree of celestial longitude, which the Sun transits on average between November 23 to December 21 each year. Johann Bayer's star atlas Uranometria Omnium Asterismorum was the first atlas to cover the entire celestial sphere. The Uranometria introduced a new systransmission electron micrograph (TEM) of star designation which has become known as the Bayer designation. His atlas added 12 new constellations to fill in the far south of the night sky, which was unknown to ancient Greece and Rome. | |
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Credit: | Science Photo Library / Science Source |
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