A Brief History of Time for the 21st CenturyAt the heart of our galaxy lies a monster so deadly, not even light can escape its grasp. Its secrets lie waiting to be discovered. It-s time to explore our universe-s most mysterious inhabitantsBlack HolesAt the heart of the Milky Way lies a supermassive black hole 4 million times more massive than our Sun. A place where space and time are so warped that light is trapped if it ventures within 12 million km. According to Einstein, inside lies the end of time. According to 21st-century physics, the reality may be far more bizarre.Black holes lie where the most massive stars used to shine and at the edge of our current understanding. They are naturally occurring objects, the inevitable creations of gravity when too much matter collapses into not enough space. And yet, although the laws of nature predict them, they fail fully to describe them.Black holes are places in space and time where the laws of gravity, quantum physics and thermodynamics c
