Question

very dense * powerful gravitational field * extremely compact space object * spectroscope data reveal swirling gas Observations by a group of astronomers were compiled. The astronomers were describing a _______________ they had discovered. A) quasar B) black hole C) solar system D) distant galaxy

Answer 1

All of the observations except "powerful gravitational field" are consistent with the current theory of black holes.

The gavitational field of a black hole is thought to be no different than that of an ordinary star with the same mass.