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LOS ANGELES, April 7 (Xinhua) -- Using NASA's Galaxy Evolution Explorer (GEE) satellite, U.S. astronomers are hunting for nearby, hard-to-see stars which could very well be home to the easiest-to-see alien planets, it was announced on Thursday.U.S. astronomers are ferreting out the new targets after the glare of bright, shining stars has frustrated most efforts at visualizing distant worlds, NASA's Jet Propulsion Laboratory (JPL) said.So far, only a handful of distant planets, or exoplanets, have been directly imaged. Small, newborn stars are less blinding, making the planets easier to see, but the fact that these stars are dim means they are hard to find in the first place."Fortunately, the young stars emit more ultraviolet light than their older counterparts, which makes them conspicuous to the ultraviolet-detecting GEE," JPL said in a press release."We've discovered a new technique of using ultraviolet light to search for young, low-mass stars near the Earth," said David Rodriguez, a graduate student of astronomy at University of Californian, Los Angeles. "These young stars make excellent targets for future direct imaging of exoplanets."Young stars, like human children, tend to be a bit unruly -- they spout a greater proportion of energetic X-rays and ultraviolet light than more mature stars. In some cases, X-ray surveys can pick out these youngsters due to the "racket" they cause. However, many smaller, less "noisy" baby stars perfect for exoplanet imaging studies have gone undetected except in the most detailed X-ray surveys. To date, such surveys have covered only a small percentage of the sky, according to JPL in Pasadena, Los Angeles.Rodriguez and his team figured that the GEE, which has scanned about three-quarters of the sky in ultraviolet light, could fill this gap.Astronomers compared readings from the telescope with optical and infrared data to look for the telltale signature of rambunctious junior stars. Follow-up observations of 24 candidates identified in this manner determined that 17 of the stars showed clear signs of youth, validating the team's approach, JPL said."The Galaxy Evolution Explorer can readily select young, low- mass stars that are too faint to turn up in all-sky X-ray surveys, which makes the telescope an incredibly useful tool," Rodriguez said in the release.

JERUSALEM, May 2 (Xinhua) -- Traditional farming may have found an ally on the Internet, via an Israeli "cloud-based" software system that enables farmers to get professional information and tips from colleagues worldwide.And IBM is interested in what they have to say.Agriculture Knowledge On-Line (AKOL) says its Internet-based system can aid global agriculture by utilizing the collective knowledge of kibbutzim (communal farms in Israel) and other agricultural experts, to offer small farmers personalized solutions to improve dairy output and crop production, and better prevent droughts.Owned by Kibbutz Bror Hayil in southern Israel, the software house has recently signed a cooperation and development agreement with IBM to manage access and technology issues."What we do here is like a bank of information and IBM provides the special tools for the end users," AKOL's CEO Roni Shani told Xinhua, "and you can do what we call 'agricultural market.'""For example, if someone in Australia needs advice on how to grow their crops better, they can just ask our advice or search through our database to find the best product for the country they 're growing the crops in," Shani said."Let's say someone in India, a small farmer, has a problem with their crop or chickens," Shani explained, noting that "it's usually very expensive and time consuming to get someone to come and check what is wrong."But, for a monthly fee, a basic subscription service enables the end user to access the software database, which allows "the farmer to just look at the pictures and pick the one that will explain what the disease or problem is and offer a solution, and if it is available in their country."AKOL claims about 1,000 customers over the globe."We just started developing it for use outside of the kibbutz with IBM's help," Shani said, "and we are developing it also in other parts of the world, like China. Right now we're cooperating with the Chinese government to help milk producers get the most out of their milking systems."Israel is one of the leading countries in milk production, with each cow yielding around 12,000 liters of milk a year on average. Two Chinese provinces plan to use AKOL's milking control system, in order to better manage their herds and equipment and increase milk production."And this is just the beginning," Shani explained, "because we are also working with other developing countries. This software will help millions of small farmers in rural or impoverished areas, that will be able to get advice and benefit from other farmers' experience on the spot and at a very affordable rate."

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.

CHICAGO, Jan. 21 (Xinhua) -- Chinese President Hu Jintao, on a trip to the United States, Friday visited an exhibition of companies operating in the U.S. Midwest.Most companies present at the exhibition, which was held in Chicago's suburban city of Woodridge, are Chinese-funded ones.During the visit, Hu encouraged Chinese companies operating in the United States to play a bigger role in promoting economic and trade cooperation between the two countries.Chinese President Hu Jintao visits an exhibition of companies operating in the U.S. Midwest, in Chicago, the United States, Jan. 21, 2011. Most companies present at the exhibition are Chinese-funded ones.The success of Chinese companies in the United States is a specific example of the China-U.S. mutually beneficial cooperation, he added.The operation of these companies not only yields profits for themselves, but adds momentum to economic development in the U.S. Midwest.Hu flew to Chicago after finishing a visit to Washington Thursday afternoon.He will wrap up his four-day state visit to the United States later Friday.

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