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WASHINGTON, May 4 (Xinhua) -- The U.S. National Aeronautics and Space Administration (NASA) announced Wednesday that its Gravity Probe B (GP-B) mission has confirmed two key predictions derived from Albert Einstein's general theory of relativity, which the spacecraft was designed to test.The experiment, launched in 2004, used four ultra-precise gyroscopes to measure the hypothesized geodetic effect, the warping of space and time around a gravitational body, and frame- dragging, the amount a spinning object pulls space and time with it as it rotates.GP-B determined both effects with unprecedented precision by pointing at a single star, IM Pegasi, while in a polar orbit around Earth. If gravity did not affect space and time, GP-B's gyroscopes would point in the same direction forever while in orbit. But in confirmation of Einstein's theories, the gyroscopes experienced measurable, minute changes in the direction of their spin, while Earth's gravity pulled at them.The findings are available online in the journal Physical Review Letters."Imagine the Earth as if it were immersed in honey. As the planet rotates, the honey around it would swirl, and it's the same with space and time," said Francis Everitt, GP-B principal investigator at Stanford University. "GP-B confirmed two of the most profound predictions of Einstein's universe, having far- reaching implications across astrophysics research."GP-B is one of the longest running projects in NASA history, with agency involvement starting in the fall of 1963 with initial funding to develop a relativity gyroscope experiment. Subsequent decades of development led to groundbreaking technologies to control environmental disturbances on spacecraft, such as aerodynamic drag, magnetic fields and thermal variations. The mission's star tracker and gyroscopes were the most precise ever designed and produced.GP-B completed its data collection operations and was decommissioned in December 2010."The mission results will have a long-term impact on the work of theoretical physicists," said Bill Danchi, senior astrophysicist and program scientist at NASA Headquarters in Washington. "Every future challenge to Einstein's theories of general relativity will have to seek more precise measurements than the remarkable work GP-B accomplished."

BEIJING, Feb. 8 (Xinhua) -- China plans to sell 600 billion yuan (91 billion U.S. dollars) worth of welfare lotteries from 2011 to 2015, up 73.6 percent from the past five years, an official from the Welfare Lottery Distribution and Management Center (WLDMC) has said.The sales of welfare lotteries posted an annual increase of 18.7 percent over the past five years, from 41.2 billion yuan in 2006 to 96.8 billion in 2010, the official said.The sales totalled 345.53 billion yuan from 2006 to 2010.The center believed that there would be broad prospect for welfare lottery sales with the increase of people's income and the development of philanthropy.According to China's Regulations on Lottery Management, money raised through lotteries is divided into three parts: the jackpot, lottery management fees, and lottery public funds.The government-run lottery raised a total of 30 billion yuan for public welfare funds in 2010, according to the WLDMC statistics.The WLDMC is administered by the Ministry of Civil Affairs, which was authorized by the State Council, or China's Cabinet, to raise welfare funds through lottery sales in 1987.

UNITED NATIONS, April 1 (Xinhua) -- UN Secretary-General Ban Ki- moon on Friday called for greater public awareness of autism, in order to fight the stigma and discrimination facing those who suffer from the disorder.The statement came in a message to mark the annual World Autism Awareness Day, observed globally on April 2."Children and persons with autistic conditions face major challenges associated with stigma and discrimination, as well as a lack of access to support," said Ban."Far too many suffer terrible discrimination, abuse and isolation, in violation of their fundamental human rights," he added.Autism is a disorder that affects the brain's development of social and communication skills, and generally appears in the first three years of life."The number of children and people with autistic conditions continues to rise -- in every nation and in every racial, ethnic and social group," the secretary-general said.Ban said it is critical to support parents of children with the disorder and "create jobs for individuals with autism based on their skills and strengths, and improve public education to better meet the needs of students with autism."

SAN FRANCISCO, March 20 (Xinhua) -- Boeing's 747-8 Intercontinental took to the sky for the first time on Sunday, a milestone for the U.S. aviation giant's latest and biggest passenger plane.Live webcast by Boeing showed that a 747-8 Intercontinental touched down at around 2:25 p.m. PST (2125 GMT) Sunday at the Boeing Field airport in Seattle in the U.S. states of Washington, after wrapping up the airplane's inaugural flight that lasted about four and half hours.During the test flight, the pilots did some system and function checks and everything went fine, according to the webcast.The new 747-8 Intercontinental can carry 467 passengers in a three-class configuration, said Boeing, which touted the new wide- body jet airliner as the only airplane in the 400-500 seat market.The Boeing 747-8 Intercontinental takes off on its maiden flight from Paine Field, in Everett, Washington, March 20, 2011. The 747-8 Intercontinental willseat 467 passengers, 51 more than the latest model of the classic 747, and burn less fuel while offering passengers more comfort, the U.S. planemaker says.Using 787-technology GEnx engines, the airplane will be quieter, produce lower emissions and achieve better fuel economy for airlines, Boeing said.The airplane also features a new wing design and an upgraded flight deck. Its interior incorporates features from the Boeing 787 Dreamliner including a new curved, upswept architecture that will give passengers a greater sense of space and comfort, while adding more room for personal belongings.Boeing has noted that compared with its predecessor, the 747- 400, the 747-8 Intercontinental provides 16 percent better fuel economy, 16 percent less carbon emissions per passenger and generates 30 percent smaller noise footprint, while carries 51 more passengers.Boeing in February said that Korean Air, VIP customers and launch customer Lufthansa have ordered a total of 33 747-8 passenger planes, with the first delivery scheduled for the fourth quarter of this year.It is reported that the 747-8 Intercontinental has a list price of about 317 million U.S. dollars.Earlier in March, Boeing announced that it has signed an agreement with Air China for the purchase of five 747-8 Intercontinental jetliners.

WASHINGTON, May 25 (Xinhua) -- Two U.S. astronauts conducted the third of four scheduled spacewalks for space shuttle Endeavour 's STS-134 mission on Wednesday morning, the U.S. National Aeronautics and Space Administration (NASA) announced.Endeavour's mission specialists Drew Feustel and Mike Fincke completed a six-hour-54-minute spacewalk at 8:37 a.m. EDT (1437 GMT). They completed all planned tasks, installing cables to increase redundancy for the power system on the Russian segment of the station, completing the external wireless antenna system work Feustel and Greg Chamitoff began during the first spacewalk, and installing a power and data grapple fixture to Zarya. The fixture will allow the station's robotic arm to "walk" to the Russian segment, extending its reach by using that grapple fixture as a base.It was the 247th spacewalk conducted by U.S. astronauts, and the 158th in support of space station assembly and maintenance, totaling 995 hours and 13 minutes. If everything goes as planned, the 1,000th hour of space station assembly and maintenance will be logged on Friday.Endeavour lifted off on May 16 from the Kennedy Space Center in Florida, to deliver to the International Space Station a 2-billion- dollar, multinational particle detector known as the Alpha Magnetic Spectrometer (AMS).AMS, a particle physics detector, is designed to search for various types of unusual matter by measuring cosmic rays. Its experiments are designed to help researchers study the formation of the universe and search for evidence of dark matter, strange matter and antimatter.NASA's 30-year-old shuttle program is ending due to high operating costs. The Obama administration wants to spur private companies to get into the space taxi business, freeing NASA to focus on deep space exploration and new technology development.There were initially five space shuttles in the fleet -- Challenger exploded shortly after liftoff in 1986 and Columbia disintegrated on its way back to Earth in 2003. Discovery retired earlier this year, while Endeavour is currently on its final mission. A last mission for Atlantis is scheduled for July, though funding for Atlantis remains in question.The sixth shuttle, Enterprise, did test flights in the atmosphere but was never flown into space. It is already on display at a museum outside Washington.When the U.S. space shuttle program officially ends later this year, the Russian space program's Soyuz capsule will be the only method for transporting astronauts to and from the station.

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