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Published online 2 January 2001 | Nature | doi:10.1038/news001228-6
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Black light at the end of the quantum tunnel
Stephen Hawking's twenty-five year old theory that black holes aren't black isn't quite the end of the story.
Black holes are supermassive collapsed stars. They are called 'black' because gravity inside the black hole is so strong that even light cannot escape.
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