"They are objects that are really essential constituents of our universe, and not only do we not understand them very well, but they seem to be a key component of how our universe works . "Understanding that gives an important insight into the formation and evolution of galaxies. "We've discovered supermassive black holes inhabiting the center of pretty much every galaxy in the nearby universe," Those black holes appear to be shaping the distribution of matter in the universe by warping the fabric of space-time with their incredibly strong gravitational pull... Earth will not be sucked into a black hole anytime in the foreseeable future, although astrophysicists believe that everything in the Milky Way is slowly falling into the supermassive black hole at its core. But by the time that happens, our sun will have long been burned out, and life on Earth will likely have been extinct for many billions of years.