The term "constellation" has evolved from a loose grouping of stars to officially defined regions of the sky with precise boundaries, formalized by the International Astronomical Union (IAU) in 1930, ...
Just like there are 50 U.S. states, each with well-defined boundaries, 88 bounded constellations dot the celestial sphere. Of these about 55 of them are visible from mid-northern latitudes and 59 from ...
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