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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.

SAN FRANCISCO, April 18 (Xinhua) -- Apple Inc. has sued Samsung Electronics Co. over patent infringement in a latest suit, U.S. media reported Monday.The suit, filed last Friday in U.S. District Court in Northern California, alleged that Samsung's smartphones, such as "Glaxy S 4G" and "Nexus S," and the Galaxy line of tablet computers violated Apple's patent and trademark, according to All Things Digital, a technology and startup company news site."It's no coincidence that Samsung's latest products look a lot like the iPhone and iPad, from the shape of the hardware to the user interface and even the packaging," the report quoted an Apple representative as saying.Intellectual property suits can be often seen among mobile computing rivals, including suits between Microsoft and Motorola, a suit by Oracle against Google, and Apple's patent dispute with Nokia and HTC.Although Samsung supplies chips for a number of Apple products, Apple CEO Steve Jobs once openly mocked Samsung and other tablet makers as "copycats" during the iPad2 launch. Last month, Apple is reportedly partnering with China's Taiwan Semiconductor Manufacturing Co. to make iPad chips.

BEIJING, Jan. 26 (Xinhua) -- Chinese Premier Wen Jiabao Wednesday invited more foreign talents to continue their careers or start businesses in China, pledging better conditions for them.During a seminar with more than 20 veteran foreign experts at the Great Hall of the People a week before the Chinese New Year, Wen thanked the foreign friends for their contributions to China's achievements in 2010.Wen said 2011 is a new starting point for China's modernization, as the country implements its 12th five-year plan for economic and social development."China's development is much more associated with the world and the supply of talents than before," Wen said, adding that China will adopt a more open policy to attract overseas experts.Last year, foreign experts made more than 300,000 visits to China, according to Ji Yunshi, general director of the State Administration of Foreign Experts Affairs.

You can think of NASA's Discovery program as a sort of outer-space American Idol: every few years the agency invites scientists to propose unmanned planetary missions. The projects have to address some sort of fundamental science question, and (this is the tough part) they have to be relatively cheap to pull off — say, half a billion dollars or so. Then the proposals go through a grueling competition before judges who aren't as nasty as Simon Cowell but who are every bit as tough. The one left standing at the end gets the equivalent of a recording contract: NASA supplies the funding and the launch vehicle, and away the winner goes — to orbit Mercury, as the Messenger spacecraft is doing right now; or to rendezvous with a couple of asteroids, as the Dawn mission will start doing this July; or to smash into a comet on purpose, a feat achieved by Deep Impact in 2005, a mission not to be confused with the movie of the same name. Now it's time for the next contenders. NASA has just announced that the first round of the latest Discovery competition is over, with three entries out of 28 moving on to the finals. They are, in increasing distance from Earth: the Geophysical Monitoring Station (GEMS) lander, which would use seismometers to study the interior of Mars; the Comet Hopper, which would do just that, leaping from place to place across the surface of Comet 46P/Wirtanen to see how different parts of the tumbling body react to heating by the sun; and the Titan Mare Explorer (TiME), which would plop into a sea of liquid hydrocarbons on Saturn's moon Titan — the first oceangoing vessel ever to set sail on another world. If you had to come up with a theme that ties all three missions together, it would be "origins." The Titan explorer, for example, will be studying a place that — in a crude way, at least — resembles the early planet Earth at a time when life arose here. Titan, with a thick atmosphere and a bizarro-world form of weather featuring toxic winds and hydrocarbon rain, is home to a mix of complex chemistry, complete with organic molecules. The oceans provide a medium in which the molecules can move around and interact with each other. It's even conceivable, though clearly a long shot, that some form of microscopic life already exists on this frigid moon. The Mars lander, by contrast, would visit a place where the seas — plain water in this case — vanished long ago. But the mission of GEMS goes far deeper than that. By analyzing Marsquakes on the Red Planet, GEMS will try to get a handle on what the interior of Mars is like. Scientists don't currently know whether the planet's core is liquid, like Earth's, or solid, or some mushy consistency in between. It all depends on how efficiently Mars has cooled since it formed 4.5 billion years ago, and that depends in turn on the planet's internal structure. "That's the mission," says Bruce Banerdt, of NASA's Jet Propulsion Laboratory, the lead scientist for GEMS. "We want to understand how Mars was built." Along with sensitive seismographic equipment, GEMS will drill down about 20 ft. (6 m) with a thermometer-equipped probe, trying to figure out how quickly the temperature rises with depth. "That will let us extrapolate all the way down to the center," Banerdt says, "which will tell us how fast Mars is cooling."

BEIJING, Feb. 25 (Xinhua) -- China's top legislature on Friday ended its bimonthly session, adopting a series of bills including a law on vehicle and vessel taxation, which is aimed at standardizing taxation and promoting environmental awareness and energy efficiency.The National People's Congress (NPC) Standing Committee also voted to adopt an amendment to the Criminal Law which reduces the number of crimes punishable by death by 13 to 55.Moreover, it passed the country's first law on intangible cultural heritage protection, which is expected to better preserve heritages of historic, literary, artistic or scientific value.At the session that opened on Wednesday, lawmakers validated the dismissal of Liu Zhijun from his post as the railways minister and appointed Sheng Guangzu, the former head of the General Administration of Customs, to replace Liu.The discipline watchdog of the Communist Party of China (CPC) said on Feb. 12 that Liu was under investigation for alleged "severe violation of discipline," while the CPC Central Committee's Organization Department said he had been removed from the post of the ministry's Party chief.Wu Bangguo, chairman of the NPC Standing Committee, said at the closing of the bimonthly session that the democratic rights of NPC members should be fully respected and guaranteed during the upcoming NPC plenary session.On Friday afternoon, the members of the NPC Standing Committee attended a lecture on China's water conservancy development.