I want to know the English word "constellation"

In astronomy, the names of star groups named after their appearance are somewhat reminiscent of the shape of objects and the appearance of mythical figures or animals. It is very helpful for astronomers and navigators to find out the position of the stars. The stars in the constellation are always marked with the name of the constellation and the Greek letters according to their brightness. Western astronomy named 88 constellations, 48 of which were named after Ptolemy, a famous astronomical work.