Black star can refer to any of the following;AstronomySaturn, is referred to as "Black Star" in ancient Judaeic beliefsDark star, a theoretical star that has a surface escape velocity that equals or exceeds the speed of lightBlack hole, any region of space time where escape to the outside universe is impossibleBlack dwarf, a type of degenerate dwarf star, specifically, a cold white dwarf.MusicBlackstar , a heavy metal band formed by former mem