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LOS ANGELES, May 23 (Xinhua) -- NASA's Gravity Recovery And Interior Laboratory spacecraft (Grail) will begin final preparations for a launch on a Moon mission in late summer, the Jet Propulsion Laboratory (JPL) said on Monday.The dynamic duo will orbit the moon to determine the structure of the lunar interior from crust to core and to advance understanding of the thermal evolution of the moon, according to JPL in Pasadena, Los Angeles.After arriving at the Astrotech payload processing facility in Titusville, Florida last week, the Grail twins, known as Grail-A and Grail-B, were removed from their shipping containers Monday. Later this week, they will begin functional testing to verify their state of health, said JPL.The twins were shipped from Lockheed Martin Space Systems, Denver.Over the next four months at the Astrotech facility, the spacecraft will undergo final testing, fueling and packaging in the shroud that will protect them as the Delta II launch vehicle lifts them into space. The spacecraft will then be transported to the Cape Canaveral Air Force Station for installation atop the rocket that will carry them toward the moon, JPL said."We're only a few full moons away from a mission that will reveal clues not only into the history of the moon and Earth, but will provide important data for future lunar exploration," said Maria Zuber, Grail's principal investigator, based at the Massachusetts Institute of Technology.Grail will be carried into space aboard a United Launch Alliance Delta II Heavy rocket lifting off from Launch Complex-19 at the Cape Canaveral Air Force Station in Florida. The launch period opens Sept. 8, 2011, and extends through Oct. 19. For a Sept. 8 liftoff, the launch window opens at 5:37 a.m. PDT (8:37 a.m. EDT) and remains open through 6:16 a.m. PDT (9:16 a.m. EDT).Grail-A and Grail-B will fly in tandem orbits around the moon for several months to measure its gravity field in unprecedented detail.The mission will also answer longstanding questions about Earth' s moon, and provide scientists a better understanding of how Earth and other rocky planets in the solar system formed, according to JPL, which manages the Grail mission.

SAN FRANCISCO, May 3 (Xinhua) -- Apple Inc. announced on Tuesday that it has updated its iMac all-in-one desktop, adding Intel's next generation quad-core processors, Thunderbolt data ports and a new HD camera.Starting at 1,199 U.S. dollars, the new iMac is up to 70 percent faster and its new graphics deliver up to three times the performance of the previous generation, Apple said in a statement.The new iMac features quad-core Intel Core i5 processors with an upgrade option to Core i7 processors.The 21.5-inch model has a single Thunderbolt port while the 27- inch has two, in addition to four USB 2.0 inputs and a FireWire 800 port.Thunderbolt, which debuted with Apple's updated MacBook Pro notebooks in February, is also an Intel design bringing together high-speed data transfer and high-definition display onto a single cable. It can transfer a full-length HD movie in less than 30 seconds with a speed of 10 gigabits per second, which is twice the speed of USB 3.0, 12 times faster than FireWire 800 and up to 20 times faster than USB 2.0.The new iMac also includes a built-in FaceTime HD camera, which supports high-definition video calls, Apple said.

VIENNA, March 28 (Xinhua) -- Stress hormone is helpful in alleviating acrophobia, a morbid fear of great heights, according to a study by Austrian scientists.They published the findings in the recent Proceedings of the National Academy of Sciences of the United States of America.Frank H. Wilhelm, professor from the Department of Clinical Psychology, Psychotherapy and Health Psychology at the University of Salzburg, Austria, carried out the first study demonstrating the clinical effectiveness of hormones released at periods of high stress in anxiety.The study found hormones and other drugs could be a good addition to behavioral treatment of several anxiety disorders.People with acrophobia have formed a so-called fear memory, which could be activated when the fear-causing stimulus occurs. They tend to react with feelings of extreme fear and anxiety to the ride in a glass elevator.Hence, scientists conducted a confrontation therapy, trying to mask this memory.A total of 40 experimental subjects had been put in a safe environment to constantly confront the fear-inducing stimulus, until they had a new reaction to the perceived threat.Observations also suggested hormones released in high stress had impact on learning and memory.Additionally, stress hormones were believed to facilitate the storage of new, anxiety-free competence and experienced confidence in the therapy. Animal studies have shown that this emotional relearning benefits from cortisol, one of the stress hormones.

BEIJING, Apirl 1 (Xinhuanet) -- An Ariane rocket launch of two communications satellites was aborted Wednesday after a technical hitch at the scheduled moment of liftoff in French Guiana on Wednesday.According to Arianespace, the Ariane 5 rocket's Vulcain main engine ignited as scheduled at 5:45 pm EDT (21:45 GMT), but the checkout process during ignition detected an unspecified anomaly, shutting down the engine before the two solid-rocket boosters ignited.The 165-foot (50-meter) tall Ariane 5 rocket's main engine's checkout process "was not completed successfully, preventing the boosters' ignition and thereby aborting the mission," Arianespace officials said. "The Ariane 5 and its two payloads remain in a safe mode on the launch pad."The Ariane 5 rocket uses a Vulcain 2 first stage engine assisted by two solid rocket boosters to launch satellite payloads into orbit. The Vulcain 2 engine is fueled by cryogenic liquid hydrogen and liquid oxygen and is designed to burn for about 600 seconds to boost payloads into space.Jean-Yves Le Gall, Arianespace president, said it would return the rocket to the final assembly building to prepare it for another launch attempt while investigating the cause of the problem. No new launch date was immediately announced.The Ariane 5 was to launch the Yahsat Y1A and Intelsat New Dawn communications satellites.

SAN FRANCISCO, April 20 (Xinhua) -- Apple Inc. on Wednesday reported record second fiscal quarter results that blow out analysts'expectations, citing strong demands for its products.For its fiscal 2011 second quarter ended on March 26, Apple posted net income of 5.99 billion U.S dollars or 6.4 dollars per share, compared with 3.07 billion, or 3.33 dollars per share a year ago. Its revenue reached 24.67 billion dollars, compare with 13.5 billion in the same period a year earlier.Analysts polled by Thomson Reuters gave an average estimate of 5.35 dollars earning per share on revenue of 23.3 billion."With quarterly revenue growth of 83 percent and profit growth of 95 percent, we're firing on all cylinders," said Steve Jobs, Apple's CEO. "We will continue to innovate on all fronts throughout the remainder of the year."As the most valuable business for the company, Apple sold 18.65 million iPhones in the second quarter, representing 113 percent unit growth over the year-ago quarter. In February, Apple announced that iPhone4 would come on Verizon network, enabling it to attract some 90 million Verizon subscribers to adopt the popular smartphone.The company sold 3.76 million Macs during the quarter, a 28 percent increase over the year-ago quarter, and 9.02 million iPods during the quarter, representing a 17 percent unit decline from the year-ago quarter.The company also sold 4.69 million iPads during the quarter, which is below analysts' projection. Analysts said Apple could have sold more tablets without supply constraints.Wall Street analysts estimated sales of iPad to reach about 6 million in the fiscal second quarter, alongside about 16 million iPhones and 3-4 million Macs.Apple also reported a gross margin of 41.4 percent compared to 41.7 percent in the year-ago quarter. Analyst said the decline of Apple's gross margins can be attributed to two reasons. One reason is the introduction of iPad in 2010 as it is a lower gross margin product than the iPhone. The other is the decline of iPhone margins over years.Supply chain related issues have been analysts' concern in the past quarter as Apple indicated in the Q1 earnings conference call that it could have sold more iPhones and faced some supply related issues. Meanwhile, the Japanese earthquake created more supply related issues for the company as its Japanese suppliers Mitsubishi Gas Chemical and Toshiba are both temporarily shut down to assess damage from the natural disaster.For the third fiscal quarter, Apple CFO Peter Oppenheimer gave an estimated revenue of about 23 billion and profit of 5.03 dollars per share.

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