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The soft-hair resolution posits that information about the initial state is stored in such soft particles. The existence of such soft hair is a peculiarity of four-dimensional asymptotically flat space and therefore this resolution to the paradox does not carry over to black holes in Anti-de Sitter space or black holes in other dimensions.
While in a non-rotating black hole the singularity occurs at a single point in the model coordinates, called a "point singularity", in a rotating black hole, also known as a Kerr black hole, the singularity occurs on a ring (a circular line), known as a "ring singularity". Such a singularity may also theoretically become a wormhole. [18]
Cosmic censorship is not merely a problem of formal interest; some form of it is assumed whenever black hole event horizons are mentioned. [citation needed] Roger Penrose first formulated the cosmic censorship hypothesis in 1969. The hypothesis was first formulated by Roger Penrose in 1969, [2] and it is not
This is not to say dark matter is not a particle, or that it’s for sure black holes. It could be a combination of both. But now, black holes as candidates for dark matter are taken much more ...
A screenshot shared on Instagram purports to show a tweet from Robert F. Kennedy, Jr. stating that genetically modified organisms (GMOs) will be banned in the U.S. beginning on January 20, 2025.
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Ever since Stephen Hawking suggested information is lost in an evaporating black hole once it passes through the event horizon and is inevitably destroyed at the singularity, and that this can turn pure quantum states into mixed states, some physicists have wondered if a complete theory of quantum gravity might be able to conserve information with a unitary time evolution.
This paper predicted the existence of what are today known as black holes. [1] [7] The term "black hole" was coined decades later, in the fall of 1967, by John Archibald Wheeler at a conference held by the Goddard Institute for Space Studies in New York City; [7] it appeared for the first time in print the following year. [8]