• All societies created them. The classical -- "ancient" -- constellations that populate our sky began in the lands of the middle east thousands of years ago, their origins largely lost to time. They passed through the hands of the ancient Greeks, who overlaid them with their legends and codified them in story and verse. During Roman times they were assigned Latin names. 

The 48 ancient constellations single out only the bright patterns. From around 1600 to 1800, post-Copernican astronomers invented hosts of "modern" constellations from the faint stars that lie between the classical figures, from pieces of ancient constellations, and from the stars that occupy the part of the southern sky that could not be seen from classical lands. They also separated the ship Argo into three parts, yielding 50 ancient constellations. In the early twentieth century, the International Astronomical Union (IAU) adopted 38 of the modern constellations and drew rectangular borders around all 88. Many of these contain informal constellations, or "asterisms," that are often the first to be learned, Ursa Major holding the "Big Dipper" and so on. Other asterisms, like the Winter Triangle, cut across constellation boundaries. Some constellations look like what they are supposed to represent, but most do not. Constellations, both ancient and modern, are generally meant to honor and represent, not to portray.