Dark star

A dark star is a theoretical object compatible with Newtonian mechanics that, due to its large mass, has a surface escape velocity that equals or exceeds the speed of light. How light is affected by gravity under Newtonian mechanics is questionable but if it were accelerated the same way as projectiles, any light emitted at the surface of a dark star would be trapped by the star’s gravity, rendering it dark, hence the name. Unlike a modern black hole, the object behind the horizon is assumed to be stable against collapse.