Answered May 21, 2017. Well a black hole is a dying star which is a very very very dense object which has so enormously strong gravitational fields that even light cannot escape from it. read more
nebula marks the birth of new stars and black hole is what a huge star generally degrades to.One creates hope for new life and the other eats up energy.Both are interesting and signify the eternal cycle of life.But one cant be better than the other. read more
To say all Nebulae dont become stars and all stars dont become blackholes. The stars which are supermassive after a stage end into these highly dense singularities of space-time which we term as black holes. So Nebulae is Star Embryo and Black Holes are the dead bodies with a Rigor Mortis. read more
Usually, the energy source is one or more stars. But today at the 204th meeting of the American Astronomical Society in Denver, Colorado, Smithsonian astrophysicist Philip Kaaret (Harvard-Smithsonian Center for Astrophysics) announced that one nebula is illuminated by X-rays from a black hole. read more