The crossword solution for the term CONSTELLATIONS SOUTHERN is URSA, which stands for URSA Major and URSA Minor. These two constellations are part of the 88 modern constellations that are recognized by the International Astronomical Union. URSA Major is one of the most recognizable constellations in the night sky, and it contains the Big Dipper asterism. URSA Minor, also known as the Little Dipper, is located near URSA Major and contains the North Star.