black holes professor brian coxA 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.
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