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Stephen Hawking Says Black Holes Don't Exist

Discussion in 'Education & Research' started by Soumya, Jan 25, 2014.

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  1. Soumya

    Soumya Major STAR MEMBER

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    Famed theoretical physicist Stephen Hawking claims that black holes don't exist. At least not in the way we've been thinking about them for ages, Yahoo News reported.

    Black holes are the source of endless fascination and speculation. Do they hold the secrets of the universe and perhaps even the key to time travel itself? We may never know the answers to those questions but Hawking thinks otherwise.

    "The absence of event horizons mean that there are no black holes - in the sense of regimes from which light can't escape to infinity," Hawking writes in a new paper entitled, "Information Preservation and Weather Forecasting for Black Holes."

    So, what does that mean exactly?

    "Event horizons," gravitational traps from which even light cannot escape, are non-existent, according to Hawking's theory, Yahoo News reported.

    Forty years after Hawking first brought the concept of black holes to public light, the debate continues today even as this "mind-bending theory" comes forward, New Scientist reported.

    According to Yahoo News, in his lecture "Into a Black Hole," Hawking described how an event horizon works:

    "Falling through the event horizon is a bit like going over Niagara Falls in a canoe. If you are above the falls, you can get away if you paddle fast enough, but once you are over the edge, you are lost. There's no way back. As you get nearer the falls, the current gets faster. This means it pulls harder on the front of the canoe, than the back. There's a danger that the canoe will be pulled apart. It is the same with black holes."

    But now, Hawking says event horizons don't exist.

    However, Hawking claims that "apparent horizons," light that could technically escape from the deep gravitational pull of a black hole, could exist. According to Yahoo News, "Put simply, an apparent horizon would only temporarily hold light and information, eventually releasing them back into space."

    Though when we're discussing the nature of spacetime, "eventually" is a pretty relative term, Yahoo News reported.

    "The picture Hawking gives sounds reasonable," Don Page, a physicist and expert on black holes at the University of Alberta in Edmonton, Canada told Nature. "You could say that it is radical to propose there's no event horizon. But these are highly quantum conditions, and there's ambiguity about what space-time even is, let alone whether there is a definite region that can be marked as an event horizon."

    Still, this revelation doesn't give astronauts permission to dive into black holes anytime soon.

    An apparent horizon wouldn't burn you to a crisp like an Event Horizon would, but it wouldn't leave you in "good shape" either, Nature reported.

    In Hawking's own words, any information or object escaping from a black hole in this scenario would be "pretty scrambled."

    Stephen Hawking Says Black Holes Don't Exist : Travel : Headlines & Global News
     
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  2. kaku

    kaku BANNED BANNED

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    so, what was the Hawking radiation??
     
  3. Marqueur

    Marqueur Peaceful Silence ELITE MEMBER

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    i read his book "A Brief History of Time" ... most of the stuff went 10 miles above my head !!!
     
  4. kaku

    kaku BANNED BANNED

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    I think you are bigger fan of Dark Knight.
     
  5. Marqueur

    Marqueur Peaceful Silence ELITE MEMBER

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    batman wala Dark Knight ... yes i like his bad a&& attitude
     
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  6. Gessler

    Gessler BANNED BANNED

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    For me it's Spidey all the way.

    On topic, given how latest theories lay in contrast to what was widely publicised and accepted sometime
    ago, It does not appear that a definitive theory will be found anytime soon - we just have to learn as
    we explore the vastness of space, physically.

    Which is to say, through use of robotics and advanced physics.
     
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  7. kaku

    kaku BANNED BANNED

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    There is no way to contact the outside world from the event horizon,, even a ship do anything inside the event horizon,, it remain unexistential for outside world.
     
  8. Manmohan Yadav

    Manmohan Yadav Brigadier STAR MEMBER

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    Black Holes Exist that has been decisively proven by the pictures taken by Radio Telescopes
    all over the world
     
  9. Gessler

    Gessler BANNED BANNED

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    We need to create a type of two-way datalink which can stay intact even while the scientific payload is
    inside the EH.

    Or,

    We should know exactly how to bring back a payload which went into EH...so that the data can be
    retrieved. The whole payload is unlikely to make it back in one piece, no matter how we build it, but a way to
    retain the electronic recordings & data should be there!
     
  10. Anees

    Anees Lt. Colonel ELITE MEMBER

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  11. kaku

    kaku BANNED BANNED

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    Not in one piece, it is unable to retrieve any thing from event horizon because this event never happened in real world.

    How you retrieve a data from thing or event which never happened.
     
  12. sangos

    sangos Lt. Colonel ELITE MEMBER

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    Hawking is a theoretical physicist, so this new spin is not surprising. Even i can say its just a 'dark matter star' at the center of our galaxy. Science does not know all the 'dark and black' stuff out there. What is impressive is scientists can theorize science and change everything as we discover and learn more.
     
  13. Bismarck

    Bismarck BANNED BANNED

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    Darth Vader fan here ....
     
  14. Marqueur

    Marqueur Peaceful Silence ELITE MEMBER

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    Stephen Hawking says that Black Holes are misunderstood

    Dark gaps are misjudged, as per Stephen Hawking, who discharged another paper titled Information Preservation and Weather Forecasting for Black Holes on January 22. Physicists have been pondering the clear Catch 22 of no vigor or data having the capacity to escape the force of a dark opening while quantum material science prescribes they can.

    Selling endeavors to settle this issue by redefining the established hypothesis of the occasion skyline, customarily the final turning point when even light is no more equipped to escape. Long ago it was felt that things got in the gravitational draw of a dark opening were bit by bit extended into long spaghetti strands as the expanding gravity starts, to push more drive on the bit of the article closer to the center, than that more distant away, bringing on the extending wonder.

    Quantum physical science states an opposing come about nonetheless, as the gigantic radiation radiating from the dark openings center would likely cause anything short of iotas by the massive gravitational power.

    These clashing speculations has expedited the claim that dark openings are misconstrued consistent with Stephen Hawking. Since vigor can't be wrecked, Hawking recommends that the mass-vigor of things trapped and pulled into the center of the dark opening come back to our universe in a ruined ambiguous state. He happens to prescribe that the occasion skyline is not as sharp a line as at one time thought, saying rather that an "evident skyline" is more probable.

    Photos: NASA Images Of Bermuda From Space | Bernews.com
     
  15. Marqueur

    Marqueur Peaceful Silence ELITE MEMBER

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    May the dark force be with you ...
     
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