Can any new interstellar matter be developed from quasars after they die?
Quasars are very distant galaxies with extremely bright centers. Because quasars are so bright for their size, astronomers think that they are powered by material being sucked into a VERY massive black hole at their centers. This black hole may be as massive as 100 million Suns. As the black hole gets more and more massive, from sucking up all that matter, it becomes less efficient at converting that energy into light and the quasar dims. Eventually the quasar probably resembles a normal galaxy again. But the stuff that vanishes into the black hole is never seen again, so no new interstellar matter is created from it. Marc Pound 6. What is the gravitational pull holding out galaxy together? You have identified exactly what makes a galaxy what it is. For galaxies to be unique bodies, they need some glue to hold them together which makes them separate from other stuff in the universe. Gravity is one of the four fundamental forces of nature (the other three are called the ‘strong,’ ‘weak,
