There is no such thing as black hole - this is what famous theoretical physicist, cosmologist, author Stephen Hawking told media, opposing the theories he and his colleagues earlier stated.

In his new research entitled "Information Preservation and Weather Forecasting for Black Holes," he said that the spacetime region was the biggest blunder of his life.

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. 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. It will also mean that the CFT on the boundary of anti deSitter space will be dual to the whole anti de Sitter space, and not merely the region outside the horizon.

The no hair theorems imply that in a gravitational collapse the space outside the event horizon will approach the metric of a Kerr solution. However inside the event horizon, the metric and matter fields will be classically chaotic. It is the approximation of this chaotic metric by a smooth Kerr metric that is responsible for the information loss in gravitational collapse. The chaotic collapsed object will radiate deterministically but chaotically. It will be like weather forecasting on Earth. That is unitary, but chaotic, so there is effective information loss. One can't predict the weather more than a few days in advance.

Talking to nature magazine, Hawking said that "the correct treatment (for black holes) remains a mystery,"

Hawking first worked about the black holes together with James Bardeen, Jacob Bekenstein, and Brandon Carter using  global techniques to explain the  strange features of the black hole solutions.

During their study, they came up with a formula called black hole thermodynamics which describes the "behaviour of a black hole in close analogy to the laws of thermodynamics by relating mass to energy, area to entropy, and surface gravity to temperature." The term black hole was first used in print by reporter Ann Ewing when she wrote the book "'Black Holes' in Space" in 1964. Since then, the term has been used by the public to define a place in the universe wherein gravity prevents anything, including light, from escaping.