However, the scientist warns it would be a journey. “Although I am interested in space, I will not try.” The British physicist again surprised the world.
In a new twist to the explanations about what would happen to fall into a black hole, the British physicist Stephen Hawking said that space travelers could end up in another universe. “If you fall into a black hole, do not give up,” he said at a conference in Stockholm, Sweden. “There is a way out,” he said. He added that if the hole was big enough and were rotating, it could have a ticket to an alternate universe.
The scientific famed feel that objects can be stored on the limits of a hole black, known as the event horizon. That is, the boundaries of space from which supposedly no particle can leave.
Ensuring that there would be such a dark well as you think, Hawking said that humans do not disappear at fall into a black hole, but would remain as a “hologram” on the edge or “fall elsewhere”.
Black holes are cosmic phenomena that originate when a star certain size collapses under its own gravity. Inside the phenomenon exists a mass concentration high enough to generate a gravitational field such that no material particle can escape it. However, black holes may be capable of emitting radiation, which was conjectured by Hawking in 1974, matching the idea many physicists today. However, initially it had stated that the radiation emitted by a black hole is evaporating end and all information about each particle disappear forever.
In 2004 Hawking surprised the world with a new study that changed his vision, The Paradox of Black Hole Information, in which he said that instead of absorbing it all, black holes leak even if some radiation. So a black hole would be the infinite well that destroys everything that falls into it, and its border would not be as sharp as previously thought. “Black holes are not as black as the paint. There are the eternal prisons we thought they were. If we enter one of them will probably come out in a parallel universe,” he said at the time.
During the lecture he gave on Tuesday in Sweden, he said that “information is not stored inside the black hole as expected, but in its limits, in the event horizon, where the information can escape “.
The physical prestigious places the key to his theory of radiation. It argues that it can collect the information and place it beyond the event horizon. However, the problem is that information is useless. “The information about incoming particles is returned, but in a chaotic and useless. This results in an information paradox. For all practical purposes, the information is lost,” he said.
In 2012, while trying to clarify whether the information disappears forever in a black hole, John Polchinski and other physicists discovered another possible destination. But they added that the event horizon becomes a firewall that burns any body that crosses it.
The physicists say that as a person outside approaching the black hole, the difference gravity between the feet and the head would be getting bigger, and at one point the break in two. Soon the tidal force, as it is called to that attraction, tear each cell, molecule and at last every atom of the body.
But other physicists said they did not agree with that premise . According to a principle of relativity of Einstein, a person who crossed the event horizon of a black hole should not feel any different, just float in space. The firewall, therefore, violate the “principle of equivalence”, a rule observed by what physicists are reluctant to discard it.
Only the empirical method can clear the doubt Someone would have to travel to within a black hole find out what happens, but Hawking himself is not in favor of that company. “You could not return to our universe so, although I am interested in traveling space, I will not try.”
A probe reveals secrets of Ceres, the planet boy
The Dawn space probe sent new images back to Earth the nanoplaneta Ceres, located in the asteroid belt between Mars and Jupiter, he reported yesterday the German Aerospace Center (DLR ).
In the images craters, ridges or mountain about 6,000 meters high, resembles a pyramid appreciated.
“Some of the things we’ve seen have not been discovered before anywhere else in the solar system,” he explained Ralf DLR scientist Jaumann. “Except on Earth, there is almost everything here.” The images show that the pyramid-shaped mountain has a diameter of between ten and twelve kilometers and presents rare earth landslides and unstable craters walls. “On many issues can only speculate at the moment,” he added Jaumann.
Dawn is 1,470 kilometers from the surface of Ceres, as the DLR, a much closer distance its previous observation orbit at 4,400 kilometers.
The NASA probe will reach its closest to Ceres point in late October, when placed at 375 kilometers, after a trip almost eight years and 5,000 million kilometers. The probe, of 1.6 meters and 747 kilograms, and had approached the giant asteroid Vesta and was in orbit for 14 months in 2011 and 2012.
Ceres the smallest of the dwarf planets in the solar system. It is located between the orbits of Mars and Jupiter. It was discovered on January 1, 1801 by Giuseppe Piazzi
.
No comments:
Post a Comment