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WASHINGTON, June 9 (Xinhua) -- Observations from NASA's Voyager spacecraft suggest the edge of our solar system may not be smooth, but filled with a turbulent sea of magnetic bubbles, the U.S. space agency said Thursday in a statement.While using a new computer model to analyze Voyager data, scientists found the sun's distant magnetic field is made up of bubbles approximately 100 million miles wide. The bubbles are created when magnetic field lines reorganize. The new model suggests the field lines are broken up into self-contained structures disconnected from the solar magnetic field. The findings are described Thursday in the Astrophysical Journal.Like Earth, our sun has a magnetic field with a north pole and a south pole. The field lines are stretched outward by the solar wind or a stream of charged particles emanating from the star that interacts with material expelled from others in our corner of the Milky Way galaxy.The Voyager spacecraft, more than nine billion miles away from Earth, are traveling in a boundary region. In that area, the solar wind and magnetic field are affected by material expelled from other stars in our corner of the Milky Way galaxy."The sun's magnetic field extends all the way to the edge of the solar system," said astronomer Merav Opher of Boston University. "Because the sun spins, its magnetic field becomes twisted and wrinkled, a bit like a ballerina's skirt. Far, far away from the sun, where the Voyagers are, the folds of the skirt bunch up."Understanding the structure of the sun's magnetic field will allow scientists to explain how galactic cosmic rays enter our solar system and help define how the star interacts with the rest of the galaxy.So far, much of the evidence for the existence of the bubbles originates from an instrument aboard the spacecraft that measures energetic particles. Investigators are studying more information and hoping to find signatures of the bubbles in the Voyager magnetic field data."We are still trying to wrap our minds around the implications of the findings," said University of Maryland physicist Jim Drake, one of Opher's colleagues.Launched in 1977, the Voyager twin spacecraft have been on a 33- year journey. They are en route to reach the edge of interstellar space. NASA's Jet Propulsion Laboratory built the spacecraft and continues to operate them.

BEIJING, Sept. 6 (Xinhuanet) -- San Francisco police said they had helped Apple search for a "lost item," following reports saying that a prototype of Apple's yet-to-be-released iPhone 5 had gone missing in July.Last week, technology news website CNET reported that an Apple employee lost at a tequila bar in San Francisco in July a prototype of iPhone 5, a new version of the company's mobile phone expected to be released in September or October.The San Francisco Police Department said in a press release that after the missing device was tracked using GPS technology to a San Francisco house, four police officers and two Apple employees visited the home."Apple employees called Mission police station directly, wanting assistance in tracking down a lost item," the statement said."The two Apple employees met with the resident and then went into the house to look for the lost item," it said. "The Apple employees did not find the lost item and left the house."Police did not say exactly what Apple had lost, but media reports found the file of San Francisco police's Friday press release about the hunt was named "iphone5.doc" -- an apparent hint of the new mobile device.A 22-year-old resident of the home, identified by SF Weekly as Sergio Calderon, told the newspaper that he has visited the bar where the phone was reportedly lost but he did not have the device.Calderon said the search of his house took place in July when police had traced the phone to the house using satellite positioning software on the device, but did not find anything in the house.Apple has declined to comment on the matter.Last year, an employee of the company lost a prototype iPhone 4 in a Redwood City bar before it was released. The details of the phone ware then unveiled by technology blog Gizmodo.Criminal charges have been filed against the man who found the prototype and another who brokered the deal to sell it to Gizmodo. Both men pleaded not guilty on Thursday.

SAN FRANCISCO, June 9 (Xinhua) -- Hewlett-Packard Co. (HP) on Thursday announced that its tablet computer, HP TouchPad, will go on sale in the United States on July 1.Two versions of HP TouchPad, with the option of either 16 gigabytes or 32 gigabytes of internal storage, and both only with Wi-Fi connection, will be available in the United States for 499. 99 U.S. dollars and 599.99 dollars respectively, the company said in a statement.The product will hit stores in Britain, Ireland, France and Germany a few days later and in Canada in mid-July, with availability scheduled to follow later this year in Italy, Spain, Australia, China's Hong Kong, New Zealand and Singapore.Preorders in North America and Europe will begin on June 19, HP said.HP did not release the price details when it introduced TouchPad on Feb. 9. The black device, with a 9.7-inch touch screen, runs webOS operating system, a mobile platform developed by Palm, a smartphone maker acquired by HP last April for 1.8 billion dollars.

SANTO DOMINGO, Aug. 19 (Xinhua) -- The number of deaths caused by cholera in the Dominican Republic have increased to 109, and there are 15,876 suspect cases, according to government figures released on Friday.Public Health Ministry said in a statement that the intensity of the outbreak has been decreasing since six weeks ago, but the region of Gran Santo Domingo, which includes the Dominican capital city, still faces a serious epidemic situation.The government is developing preventive measures which include informing the population, careful observation of diarrhea cases, providing drinkable water and building new public toilets as part of efforts to contain the outbreak, it added.The latest Cholera outbreak appeared in the Dominican Republic last November, a month after cases were reported in Haiti.The Ministry said they stepped up efforts to monitor the situation after tropical storm "Emily" passed through parts of the country two weeks ago.After the beginning of the rain season, cholera cases have increased generally and all the public hospitals in the country are provided with supplies and medical staff to care for the people with symptoms of cholera or other tropical diseases.

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