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WASHINGTON, Nov. 10 (Xinhua) -- Using its near-infrared vision to peer nine billion years back in time, NASA's Hubble Space Telescope has uncovered an extraordinary population of young dwarf galaxies brimming with star formation, the U.S. space agency announced on Thursday.While dwarf galaxies represent the most common type of galaxy in the universe, the rapid star-birth observed in these newly- found examples may force astronomers to reassess their understanding of the ways in which galaxies form.The galaxies are a hundred times less massive, on average, than the Milky Way, yet they churn out stars at such a furious pace that their stellar content would double in just 10 million years. By comparison, the Milky Way would take a thousand times longer to double its star population.The universe is estimated to be 13.7 billion years old, and these newly-discovered galaxies are extreme even for the young universe -- when most galaxies were forming stars at higher rates than they are today. Astronomers using Hubble's instruments could spot the galaxies because the radiation from young, hot stars has caused the oxygen in the gas surrounding them to light up like a bright neon sign."The galaxies have been there all along, but up until recently astronomers have been able only to survey tiny patches of sky at the sensitivities necessary to detect them," said Arjen van der Wel of the Max Planck Institute for Astronomy in Germany, lead author of a paper on the results to be published online on Nov. 14 in The Astrophysical Journal. "We weren't looking specifically for these galaxies, but they stood out because of their unusual colors. "The observations were part of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS), an ambitious three- year study to analyze the most distant galaxies in the universe. CANDELS is the first census of dwarf galaxies at such an early epoch."In addition to the images, Hubble has captured spectra that show us the oxygen in a handful of galaxies and confirmed their extreme star-forming nature," said co-author Amber Straughn at NASA's Goddard Space Flight Center. "Spectra are like fingerprints. They tell us the galaxies' chemical composition."The CANDELS team uncovered the 69 young dwarf galaxies in near- infrared images taken with Hubble's Wide Field Camera 3 and Advanced Camera for Surveys.The observations suggest that the newly-discovered galaxies were very common nine billion years ago. However, it is a mystery why the newly-found dwarf galaxies were making batches of stars at such a high rate.

BEIJING, Nov. 5 (Xinhua) -- Chinese President Hu Jintao's speech at the sixth Group of Twenty (G-20) Summit has drawn positive comments from the international community, which praised the address for proposals for efforts to maintain world economic growth and financial stability.In the speech delivered at the Nov. 3-4 summit in Cannes, France, Hu put forward a package of proposals urging the world's major economies to work together to promote growth and financial stability."It is imperative that we stand on a higher plane, transcend differences on specific issues, move beyond short-term considerations, and jointly seek ways to overcome the crisis and sustain development," Hu told the summit.Chinese President Hu Jintao gives a speech at the Group of Twenty (G20) summit in Cannes, France, Nov. 4, 2011."At this critical moment, the G-20 must work to address the key problems, boost market confidence, defuse risks and meet challenges and promote global economic growth and financial stability," Hu said.Reporting developments at the G-20 summit, the Reuters news agency quoted Hu as saying in the speech: "As the premier forum for international economic cooperation, the G20 must continue to demonstrate the spirit of standing together in times of adversity and pursuing win-win cooperation. At this critical moment, the G20 must work to address the key problems, boost market confidence, defuse risks and meet challenges, and promote global economic growth and financial stability."Reuters also said Hu hopes to send a clear message of ensuring economic development and boosting stablity to the international community.The French newspaper Le Figaro reported that Hu expressed confidence that Europe could overcome its debt crisis.The website of Estado de Sao Paulo, Brazil's daily newspaper, quoted Hu as saying that China has made contributions to world economic growth, and that an imperative task for the G-20 summit was to maintain economic growth.At the summit, Hu said that a priority for world leaders is to maintain robust economic growth, and called attention to the maintenance of domestic growth in China, which would benefit the world economy, the newspaper reported.The newspaper also cited Hu as calling for advancing reform of the international monetary system in a steady manner, expanding the use of the Special Drawing Rights of the IMF, reforming the SDR currency basket, and building an international reserve currency system with stable value, rule-based issuance and manageable supply.O Globo newspaper of Brazil reported that in the speech, Hu demanded that Western countries stop exerting pressures on emerging economic powers to compel them to appreciate their currencies.The newspaper quoted Hu as saying: "To keep asking emerging markets to revalue their currencies and reduce exports will not lead to balanced growth. On the contrary, it would only plunge the global economy into a 'balanced recession' and make sustainable growth impossible."In a related development, Robert Zoellick, president of the World Bank, issued a statement on the G-20 summit on Friday, saying: "The G-20 today presented an agenda to restore confidence in the global economy through its commitment to reinvigorate growth, create jobs, ensure financial stability, and make globalization more sustainable and inclusive."The global economy is still very much at risk from faltering economies in developing countries, and the Eurozone deal has bought some time, and the challenge is how to use the time, Zoellick said."I believe it would be very useful if the G20 leaders can send a strong signal on follow-through after the Eurozone announcement so as to sustain and build confidence," Zoellick noted.

COPENHAGEN, Oct. 1 (Xinhua) -- Denmark implemented a tax on foods high in saturated fat from Saturday, the first of its kind in the world, which will affect products containing more than 2.3 percent saturated fat.Butter, cream, cheese, meat, cooking oil and processed foods like pizza and dark chocolate are among thousands of products affected. The so-called fat tax is pegged at 16 Danish kroner (2.87 U.S. dollars) per kilo of saturated fat.Thus, a 250-gram packet of butter, which previously cost 15.5 Danish kroner (2.78 dollars), will now cost 18.10 Danish kroner (3.25 dollars). And the cost of a liter of olive oil has risen from 38.95 Danish kroner (7 dollars) to 41.60 Danish kroner (7.48 dollars), for example.Some Danes began hoarding the affected products ahead of Saturday's deadline, while stores across Denmark rushed to mark-up prices of these goods.Although the new tax will mean higher costs for consumers and many food product manufacturers, the Danish government believes the tax is a good way of reducing Danes'consumption of fatty foods.Local producers are worried the tax will give an unfair advantage to manufacturers from neighboring countries who, they say, can now sell their products more cheaply in the Danish market.However, tax authorities here said imported food products will also be subject to the tax.

TAIPEI, Dec. 3 (Xinhua) -- A televised debate among three candidates for the upcoming election of Taiwan leader was held Saturday in Taipei, with cross-Strait issues highlighted in the first face-to-face debate before the Jan. 14 election.The candidates - Ma Ying-jeou, chairman of Taiwan's ruling Kuomintang (KMT) party, Tsai Ing-wen who represents the island's major opposition Democratic Progressive Party (DPP), and People First Party (PFP) chairman James Soong - stated their political views respectively and debated with each other.Both Ma and Soong stressed the adherence to the 1992 Consensus in order to maintain peaceful development of cross-Strait relations.In November 1992, the mainland's Association for Relations Across the Taiwan Straits and Taiwan's Straits Exchange Foundation reached the consensus that each of the two organizations verbally acknowledges that "both sides of the Taiwan Straits adhere to the one-China principle."Ma said the 1992 Consensus was "the best way" for the two sides to settle disputes and achieve win-win situation."If the 1992 Consensus was not adhered to, cross-Strait relations will be thrown to an uncertain state, or even regress," Ma said.While acknowledging achievement of cross-Strait relations since 2005 such as the signing of the Economic Cooperation Framework Agreement (ECFA) across the Strait, Soong called for seeking "common benefits for all" with cross-Strait peaceful development as the precondition.However, Tsai continued to deny the 1992 Consensus and said that a "Taiwan consensus" should be made before negotiating with the Chinese mainland.The three candidates also expressed own views on judicial reform, finance and issues concerning people's livelihood.The televised debate was held by the Taiwan Public Television Service and other local media.Two more debates will be held on Dec. 10 and Dec. 17.

WASHINGTON, Oct. 19 (Xinhua) -- A total of 25 people have been killed in 12 U.S. states in a listeria outbreak traced to Colorado cantaloupes, the U.S. Centers for Disease Control and Prevention ( CDC) said Wednesday.The number of people sickened by the tainted cantaloupes has reached 123 in 26 states, with Pennsylvania reporting its first case. One of the ill patients, a pregnant woman, suffered a miscarriage, the CDC said in a telebriefing.The listeria outbreak has been the most deadly one since 1998, according to the CDC.Listeria is a common bacterium that typically causes mild illness in healthy people, but can cause severe illness in older people and those with compromised immune systems. It also can cause miscarriages and stillbirths in pregnant women and severe infections in new babies.The CDC estimates that about 48 million people in the U.S. each year get sick from tainted food, with about 128,000 hospitalized and 3,000 deaths.

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