The Zodiac Constellation is a group of twelve constellations that form the basis of astrological signs. One of these constellations is LEO, which is represented by the three-letter acronym LEO. LEO is a constellation located on the celestial equator and is one of the largest constellations in the night sky. It is visible throughout the year in both the Northern and Southern hemispheres. LEO is associated with the mythological figure of the Nemean Lion, which was slain by Hercules.