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Science & Technology

Stephen Hawking: 'there are no black holes'

By T.K. Randall
January 25, 2014 · Comment icon 88 comments



Black holes have puzzled physicists for years. Image Credit: NASA / Alain Riazuelo
Prof Hawking has published a new paper suggesting that the accepted view about black holes is wrong.
Well known for his work on the subject, the world-famous physicist is attempting to reconcile the behavior of a black hole under both basic gravitational theory and quantum theory to produce a single unified system.

According to Hawking, under gravitational theory the event horizon of a black hole is such that nothing, not even light, can escape from it. Under a more recent quantum theory interpretation however, the event horizon of a black hole would instead be a seething mass of high-energy particles that would incinerate anything that it touched.
Combining these concepts, Hawking came up with the idea of an "apparent horizon" with no fixed boundary, while re-branding the term "black hole" to the less absolute "grey hole".

"The absence of event horizons means that there are no black holes in the sense of regimes from which light can't escape to infinity," he wrote. "There are however apparent horizons which persist for a period of time. This suggests that black holes should be redefined as metastable bound states of the gravitational field."

Source: The Register | Comments (88)


Recent comments on this story
Comment icon #79 Posted by TheGreatBeliever 9 years ago
His theory on no god but aliens i believe. this one maybe not..
Comment icon #80 Posted by MyOtherAccount 9 years ago
Perhaps his next discovery will be, "There is no Hawking."
Comment icon #81 Posted by White Crane Feather 9 years ago
I'm at least as uninformed as you are but I'm still pulling for "opens a wormhole and big bangs a new universe in another region of space-time" I'm pulling for a new universe itself. Accelerated implosion turns into accelerated expansion from the perspective on an insider.
Comment icon #82 Posted by Drayno 9 years ago
I have the urge to re-read 'A Brief History of Time' and insert [There are no Black Holes] every time he mentions them.
Comment icon #83 Posted by spacecowboy342 9 years ago
Again, Hawking did not say there were no black holes.
Comment icon #84 Posted by toast 9 years ago
I have the urge to re-read 'A Brief History of Time' and insert [There are no Black Holes] every time he mentions them. Feel urged to read the complete thread here.
Comment icon #85 Posted by psyche101 9 years ago
Again, Hawking did not say there were no black holes. How do people keep missing that?
Comment icon #86 Posted by psyche101 9 years ago
His theory on no god but aliens i believe. this one maybe not.. What's wrong with the hypothetical scenario of hostile aliens? What does evolution drive creatures to do? Attain top predator, and that results in violence quite often.
Comment icon #87 Posted by spacecowboy342 9 years ago
How do people keep missing that? I don't know, but a better question might be, why is it that no news source can ever find a reporter that actually understands the basics of science to report on science stories?
Comment icon #88 Posted by The Id3al Experience 9 years ago
I don't know, but a better question might be, why is it that no news source can ever find a reporter that actually understands the basics of science to report on science stories? Because reporters only requirement for the job is.... Can you lie!


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