The genius Hawking admitted he had been wrong and conceded a
bet he made in 1997 with a fellow scientist about black holes. To understand
the bet, let's backpedal a little to understand what black holes are in the
first place.Stars are gigantic -they have so much mass that their
gravity is always incredibly strong. This is fine, as long as the star
continues to burn its nuclear fuel, exerting this energy outward, thus
counteracting gravity.
However, once a massive enough star "dies" or
burns out, gravity becomes the stronger force, and causes that big star to
collapse on itself. This creates what scientists call a black hole.
But, he said at the time, information is lost in the black
hole that eventually evaporates.
The problem was that this idea that
information is lost conflicted with the rules of quantum mechanics, creating
what Hawking called an "information paradox."The gravity is so powerful in this collapse that not even
light can escape. However, Hawking proposed in 1975 that black holes are not
really black. Rather, they radiate energy.
Hawking is such a good sport that he can admit when he's
wrong - which he did in 2004. While giving a lecture at a scientific
conference, he said that because black holes have more than one
"topology," and when one measures all the information released from
all topologies, information isn't lost
American theoretical physicist John Press kill disagreed
with this conclusion that information is lost in black hole. In 1997, he made a
bet with Hawking saying that information can escape from them, thus not
breaking the laws of quantum mechanics.
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