The Crab Constellation is a group of stars located in the Northern Hemisphere. It is one of the 88 modern constellations recognized by the International Astronomical Union. The two main stars in the constellation are CANCER (6 letters) and LION (4 letters). CANCER is the brightest star in the constellation, while LION is the second brightest. The constellation is named after the crab in Greek mythology that was sent by Hera to distract Hercules during his fight with the Hydra.