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LOS ANGELES, May 5 (Xinhua) -- NASA has selected three planetary missions from which it will pick one potential mission to look at Mars' interior for the first time, NASA's Jet Propulsion Laboratory (JPL) announced on Thursday.The Mars mission, to be launched in 2016, would be led by JPL, according to the announcement.The other two missions would study an extraterrestrial sea on one of Saturn's moons; or study in unprecedented detail the surface of a comet's nucleus, said JPL in Pasadena, Los Angeles.The selected investigations could reveal much about the formation of our solar system and its dynamic processes, JPL said.Each mission will receive three million dollars to conduct its mission's concept phase or preliminary design studies and analyses, JPL said in a news release.After another detailed review in 2012 of the concept studies, NASA will select one to continue development efforts leading up to launch. The selected mission will be cost-capped at 425 million dollars, not including launch vehicle funding, according to JPL.NASA's Discovery Program requested proposals for spaceflight investigations in June 2010. A panel of NASA and other scientists and engineers reviewed 28 submissions."NASA continues to do extraordinary science that is re-writing textbooks," said NASA Administrator Charles Bolden. "Missions like these hold great promise to vastly increase our knowledge, extend our reach into the solar system and inspire future generations of explorers."

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.

SAN FRANCISCO, May 6 (Xinhua)-- Latest research released Friday shows that Google Android has become the No.1 smartphone platform in the United States in the first quarter as more smartphone manufacturers have adopted the operating system.During the three months ending in March, Google Android grew 6. 0 percentage points to 34.7 percent market share, among the 72.5 million U.S. smartphone users, reported comScore, an Internet marketing research company.The number of smartphone users increased by 15 percent on a quarter-on-quarter basis, said the research.Research in Motion, developer of Blackberry smartphones, ranked second with 27.1 percent, a slide of 4.5 percentage points on a quarter-on-quarter basis. Apple grew 0.5 points to 25.5 percent share, followed by Microsoft (7.5 percent) and Palm (2.8 percent).According to the research, 234 million Americans age 13 and older used mobile devices in the first quarter. Samsung ranked as the top handset maker with 24.5 percent of U.S. mobile subscribers, and LG ranked second with 20.9 percent share, followed by Motorola (15.8 percent) and RIM (8.4 percent). Apple continued to gain share following the launch of the Verizon iPhone, growing by 1.1 percentage points to 7.9 percent of subscribers.On mobile content use, 68.6 percent of U.S. mobile subscribers used text messaging on their mobile device in March. Browsers were used by 38.6 percent of subscribers (up 2.2 percentage points), while downloaded applications were used by 37.3 percent (up 2.9 percentage points).Accessing of social networking sites or blogs increased 2.6 percentage points, representing 27.3 percent of mobile subscribers. Playing games comprised 25.7 percent of the mobile audience, while listening to music represented 17.9 percent, said the report.

LOS ANGELES, May 2 (Xinhua) -- An asteroid will fly past Earth this fall at a close approach that will allow a close-up view of one of Earth's good-sized space rocks, NASA's Jet Propulsion Laboratory (JPL) announced on Monday."On November 8, asteroid 2005 YU55 will fly past Earth and at its closest approach point will be about 325,000 kilometers away," said Don Yeomans, manager of NASA's Near-Earth Object Program Office at the JPL in Pasadena, Los Angeles."This asteroid is about 400 meters wide -- the largest space rock we have identified that will come this close until 2028."Despite the relative proximity and size, "YU55 poses no threat of an Earth collision over, at the very least, the next 100 years, " Yeomans said in a press release."During its closest approach, its gravitational effect on the Earth will be so miniscule as to be immeasurable. It will not affect the tides or anything else.""While near-Earth objects of this size have flown within a lunar distance in the past, we did not have the foreknowledge and technology to take advantage of the opportunity," said Barbara Wilson, a scientist at JPL. "When it flies past, it should be a great opportunity for science instruments on the ground to get a good look.""The best resolution of the radar images was 7.5 meters per pixel," said JPL radar astronomer Lance Benner. "When 2005 YU55 returns this fall, we intend to image it at 4-meter resolution with our recently upgraded equipment at the Deep Space Network at Goldstone, California. Plus, the asteroid will be seven times closer. We're expecting some very detailed radar images."Asteroid 2005 YU55 was discovered in December 2005 by Robert McMillan, head of the NASA-funded Spacewatch Program at the University of Arizona, Tucson. The space rock has been in astronomers' crosshairs before.In April 2010, Mike Nolan and colleagues at the Arecibo Observatory in Puerto Rico generated some ghostly images of 2005 YU55 when the asteroid was about 2.3 million kilometers from Earth.

BEIJING, May 24 (Xinhuanet) -- Facebook founder Mark Zuckerberg welcomed more kids to join in the social network site, according to International Business Times reports on Monday.He made this comment in the NewSchools Summit in California.Zuckerberg said Facebood can help young kids to learn from each other and acquire more knowledge about using the internet."That will be a fight we take on at some point," Zuckerberg said, "My philosophy is that for education you need to start at a really, really young age." At the moment, Facebook officially does not allow the children younger than 13 to sign up, since the Children's Online Privacy Protection Act (COPPA) forbids children under 13 from joining an online service which collects user information data.However it recently revealed that 7.5 million Facebook users were younger than that, accoding to a study released last week by Consumer Reports.Some experts suggested Facebook may not be in any position to provide that education in its current form. "The lessons of digital citizenship have to start young, but I don't feel that Facebook is the venue to have those lessons occur. A lot of missteps happen on that site without a lot of coaching." said Dr. Gwenn O'Keeffe, an expert on young children's education.