Galaxy
A galaxy is a collection of star systems and other massive stellar objects (like black holes) orbiting around their center of gravity. The best-known galaxy is the Milky Way, in which the Solar system and Earth reside.
A galaxy is a collection of star systems and other massive stellar objects (like black holes) orbiting around their center of gravity. The best-known galaxy is the Milky Way, in which the Solar system and Earth reside.