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Black Holes Don't Trap Information Forever

sciencehabit writes "New calculations suggest that black holes are not a one-way street. Anything that falls into them may eventually come out. The findings lend important support to quantum gravity, but fly in the face of Einsteinian relativity. They also support Stephen Hawking's reluctant admission that information couldn't be destroyed by black holes. Penn State researcher Ahbay Ashtekar was quoted saying, 'Once we realized that the notion of space-time as a continuum is only an approximation of reality, it became clear to us that singularities are merely artifacts of our insistence that space-time should be described as a continuum.' Let the physics infighting begin."

Proposed Mission Could Study Space-Time Around Black Holes

What do black holes, magnetars and supernovae have in common? They all emit X-rays. But it's difficult, if not impossible to study certain aspects of the X-ray emissions from these powerful objects. And there's much we don't understand about how black holes distort space-time around them, or how magnetars affect their surroundings, or how cosmic rays are accelerated by shocks in supernova remnants. A proposed new NASA mission called Gravity and Extreme Magnetism (GEMS), will use a new technique to study what has been unattainable until now. GEMS won't study the X-ray emission of these objects directly, but will build up a picture indirectly by measuring the polarization of X-rays emitted from these violent regions.

Antivirus holes, browser spies are highlights at Microsoft's BlueHat hacker sessions

The ease with which holes in antivirus software can be discovered and the insidiousness of invisible scripts that can track your Web surfing were two of the notable talks at the BlueHat hacker sessions Microsoft held Friday on its Redmond, Wash., campus, according to a veteran attendee.

Black holes not black after all

International scientists have used flowing water to simulate a black hole, testing Stephen Hawking's theory that black holes are not black after all.

Stars Orbiting Close to Black Holes Flattened like Hot Pancakes

Playing with black holes is a risky business, especially for a star that is unlucky enough to be orbiting one. Assuming an unfortunate star hasn't already had all of its hydrogen fuel and other component elements stripped from its surface, the powerful tidal forces will have some fun with the doomed stellar body. First the star will be stretched out of shape and then it will be flattened like a pancake. This action will compress the star generating violent internal nuclear explosions, and shockwaves will ripple throughout the tormented stellar plasma. This gives rise to a new type of X-ray burst, revealing the sheer power a black hole's tidal radius has on the smaller binary sibling. Sounds painful…

Big Black Holes Cook Flambeed Stellar Pancakes

According to two astrophysicists from Paris Observatory, the fate of stars that venture too close to massive black holes could be even more violent than previously believed. Not only are they crushed by the black hole’s huge gravity, but the process can also trigger a nuclear explosion that tears the star apart from within. In addition, shock waves in the pancake star carry a brief and very high peak of temperature outwards, that could give rise to a new type of X-ray or gamma-ray bursts.

Golfer hits two holes-in-one in the same round (AP)

MUSCATINE, Iowa - Luck doesn't even to begin to describe golfer Ted Kemp's round on Monday. Kemp, a 12-handicapper, knocked in holes-in-one on back-to-back par 3s at the Muscatine Municipal Golf Course.

Golfer hits two holes-in-one in the same round

MUSCATINE, Iowa (AP) -- Luck doesn't even to begin to describe golfer Ted Kemp's round on Monday. Kemp, a 12-handicapper, knocked in holes-in-one on back-to-back par 3s at the Muscatine Municipal Golf Course.

Google plugs open-source security holes with oCERT

Google is lending its security expertise to the open-source community to help plug security holes with its oCERT team. While much remains to be seen as to how successfully or actively oCERT will operate, it's a welcome addition to the open-source world by Google.

How Does Information Escape From Black Holes?

Physicists at Penn State have provided a mechanism by which information can be recovered from black holes, those regions of space where gravity is so strong that, according to Einstein's theory of general relativity, not even light can escape. The team's findings pave the way toward ending a decades-long debate sparked by renowned physicist Steven Hawking. The team's work will be published in the 20 May 2008 issue of the journal Physical Review Letters.

Space telescope launched to spy on black-holes

After several delays, the US space telescope GLAST was heading for a mission expected to shed light on black holes and the gravitational forces causing the universe to expand.

Space telescope launched to spy on black-holes

After several delays, the US space telescope GLAST Wednesday was heading for a mission expected to shed light on black holes and the gravitational forces causing the universe to expand.

Space telescope launched to spy on black-holes

Washington - After several delays, the US space telescope GLAST Wednesday was heading for a mission expected to shed light on black holes and the gravitational forces causing the universe to expand. GLAST was launched on a Delta II rocket from Cape Canaveral in Florida at 1600 GMT.

Physicists Demonstrate How Information Can Escape From Black Holes

Physicists at Penn State have provided a mechanism by which information can be recovered from black holes, those regions of space where gravity is so strong that, according to Einstein's theory of general relativity, not even light can escape. The team's findings pave the way toward ending a decades-long debate sparked by renowned physicist Steven Hawking.

How to Escape From a Black Hole

According to Einstein's theory of general relativity, black holes are regions of space where gravity is so strong that not even light can escape. And in the 1970's physicist Stephen Hawking asserted that any information sucked inside a black hole would be permanently lost. But now, researchers at Penn State have shown that information can be recovered from black holes.

Hinterland Drills Up to 1.46g/t PGE at Ebay Property, Quebec

VAL D'OR, QUEBEC--(Marketwire - April 29, 2008) - Hinterland Metals Inc. (TSX VENTURE:HMI) is pleased to report more platinum & palladium ("PGE") assay results from a drill program that was completed from mid-December 2007 to early March 2008 on the Ebay property located 35km southeast of Matagami in the Abitibi region of Quebec. This batch of assays includes results from holes EB08-31 to 36. It also includes results for additional sampling done in holes EB07-17 and 19. Assay results are pending for hole EB08-37 and they will be released in batches as they are received. The following platinum-palladium bearing intervals were intersected as follows:

Hinterland Drills Up to 1.46g/t PGE at Ebay Property, Quebec

VAL D'OR, QUEBEC--(Marketwire - April 29, 2008) - Hinterland Metals Inc. (TSX VENTURE:HMI) is pleased to report more platinum & palladium ("PGE") assay results from a drill program that was completed from mid-December 2007 to early March 2008 on the Ebay property located 35km southeast of Matagami in the Abitibi region of Quebec. This batch of assays includes results from holes EB08-31 to 36. It also includes results for additional sampling done in holes EB07-17 and 19. Assay results are pending for hole EB08-37 and they will be released in batches as they are received. The following platinum-palladium bearing intervals were intersected as follows:

Hinterland Drills Up to 1.46g/t PGE at Ebay Property, Quebec

VAL D'OR, QUEBEC--(Marketwire - April 29, 2008) - Hinterland Metals Inc. (TSX VENTURE:HMI - News) is pleased to report more platinum & palladium ("PGE") assay results from a drill program that was completed from mid-December 2007 to early March 2008 on the Ebay property located 35km southeast of Matagami in the Abitibi region of Quebec. This batch of assays includes results from holes EB08-31 to 36. It also includes results for additional sampling done in holes EB07-17 and 19. Assay results are pending for hole EB08-37 and they will be released in batches as they are received. The following platinum-palladium bearing intervals were intersected as follows:

Why the LHC Won't Destroy the World

An anonymous reader writes "Most people are aware of the recent articles contending that the Large Hadron Collider at CERN might destroy the world. While most scientists have no such concerns, a recent preprint released to arxiv systematically dismantles the notion. The gist of the argument is this: Everything that will be created at the LHC is already being created by cosmic rays. If a black hole created by the LHC is interactive enough to destroy the world within the lifetime of the sun, similar black holes are already being created by cosmic rays. Such black holes would be stopped by dense cosmic objects (neutron stars and white dwarfs). A black hole stopped in one of these objects would eventually absorb it. We see sufficiently old neutron stars in the sky, thus any black hole that could be created at the LHC, even if it is stable, wo

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