A '''galaxy''' is a massive ensemble of hundreds of millions of stars and planets, all interacting through the gravitational force, orbiting around a common center.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> The universe contains hundreds of millions of galaxies. Some scholars theorize that the center of every galaxy is a super massive [[blackhole]]. | A '''galaxy''' is a massive ensemble of hundreds of millions of stars and planets, all interacting through the gravitational force, orbiting around a common center.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> The universe contains hundreds of millions of galaxies. Some scholars theorize that the center of every galaxy is a super massive [[blackhole]]. |