Question: where did many of the names for the constellations come from

title: Constellation
text: Historically , the constellations can be simply divided into two regions ; namely the northern and southern sky , whose origins are distinctly different . The northern skies have constellations that have mostly survived since Antiquity , whose common names are based on Classical Greek legends or those whose true origins have now been lost . Evidence of these constellations have survived in the form of star charts , whose oldest representation appears on the statue known as the Farnese Atlas , which has been suggested to be based on the star catalogue of the Greek astronomer , Hipparchus . Southern hemisphere constellations are more modern inventions , which were created as new constellations , or become substitutes for some ancient constellation . e.g. Argo Navis . Some southern constellations were to become obsolete or had extended names that became foreshortened to more usable forms e.g. Musca Australis became simply Musca . 

Answer: answer: Historically , the constellations can be simply divided into two regions ; namely the northern and southern sky. The northern skies have constellations whose common names are based on Classical Greek legends or those whose true origins have now been lost. Some southern constellations were to become obsolete or had extended names that became foreshortened to more usable forms e.g. Musca Australis became simply Musca.