Sagittarius A* (pronounced "Sagittarius A-Star", abbreviated Sgr A*) is a bright and very compact astronomical radio source at the Galactic Center of the Milky Way, near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic. It is the location of a supermassive black hole, similar to those at the centers of most, if not all, spiral galaxies and elliptical galaxies.