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WASHINGTON, Dec. 20 (Xinhua) -- NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system, the U.S. space agency announce Tuesday.The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in the so-called habitable zone where liquid water could exist on a planet's surface, but they are the smallest exoplanets ever confirmed around a star like our sun, according to NASA.The discovery marks the next important milestone in the ultimate search for planets like Earth. The new planets are thought to be rocky. Kepler-20e is slightly smaller than Venus, measuring 0.87 times the radius of Earth. Kepler-20f is slightly larger than Earth, measuring 1.03 times its radius. Both planets reside in a five-planet system called Kepler-20, approximately 1, 000 light-years away in the constellation Lyra.Kepler-20e orbits its parent star every 6.1 days and Kepler-20f every 19.6 days. These short orbital periods mean very hot, inhospitable worlds. Kepler-20f, at 800 degrees Fahrenheit, is similar to an average day on the planet Mercury. The surface temperature of Kepler-20e, at more than 1,400 degrees Fahrenheit, would melt glass."The primary goal of the Kepler mission is to find Earth-sized planets in the habitable zone," said Francois Fressin of the Harvard-Smithsonian Center for Astrophysics, lead author of a new study published in the journal Nature. "This discovery demonstrates for the first time that Earth-size planets exist around other stars, and that we are able to detect them."The Kepler-20 system includes three other planets that are larger than Earth but smaller than Neptune. Kepler-20b, the closest planet, Kepler-20c, the third planet, and Kepler-20d, the fifth planet, orbit their star every 3.7, 10.9 and 77.6 days. All five planets have orbits lying roughly within Mercury's orbit in our solar system. The host star belongs to the same G-type class as our sun, although it is slightly smaller and cooler.

SAN FRANCISCO, Nov. 11 (Xinhua) -- Logitech, a provider of personal peripherals for computers and other digital platforms, said its production of Google TV was a "big mistake," giving a major blow to Google's aspiration to change the traditional TV experience, U.S. media reported on Friday.According to technology news site The Verge, at a recent analyst and investor meeting, Logitech chief executive officer Guerrino De Luca said the launch of Logitech Revue (with Google TV set-top box) last year was "a mistake of implementation of a gigantic nature."The project cost the company more than 100 million U.S. dollars in operating profit.He said the company had "brought closure to the Logitech Revue saga" and has "no plans to introduce another box to replace Revue" after the inventory runs out this quarter.The CEO also predicted that Google TV will have a chance sometime in the future, but it would be a "grandchild of Google TV " that would do it. Logitech has no plans to help make that happen.Launched during the holiday shopping season last year, the Logitech Revue with Google TV system was criticized for being pricey and unpolished although it gives consumers a streamlined experience of traditional TV content and online media. In August, Logitech slashed the price from 249 dollars to 99 dollars.Last month, Google introduced a redesigned Google TV after sales of the first version did not meet expectations.In April, Logitech reported that Revue with Google TV set-top box and related gear only brought five million dollars in sales during the first quarter of this year, 72 percent less than the company had expected.However, support from some leading TV manufacturers may still help Google fulfill its TV plan. A Bloomberg report said Friday that Google and LG Electronics, world's second-largest TV manufacturer, may unveil a television using the search giant's software at the upcoming Consumer Electronics Show in Las Vegas.Samsung, world's largest TV manufacturer, said in February that it was in discussions with Google to develop a TV product.

ZHENGZHOU, Oct. 21 (Xinhua) -- A leading Chinese producer for quick-frozen snacks Thursday apologized for the production and sale of bacteria-contaminated dumplings and said that a recall was underway.A spokeswoman from Zhengzhou Sinian Food Co., Ltd. said they had confirmed the contamination of staphylococcus aureus, or golden staph, in its quick-frozen seafood and pork-stuffed dumplings.The company had started the recall and destruction of the contaminated products, said Lin Xiaohong, a marketing executive of the company, adding that an investigation into the source of the contamination was underway.The statement came after authorities in Beijing announced they had detected golden staph from one batch of dumpling products by the Henan-based company. The bacteria can cause various diseases, including pneumonia and sepsis, and is strictly banned in food procession.

SHIJIAZHUANG, Oct. 16 (Xinhua) -- Chinese archaeologists said Sunday that they have found evidence of the cultivation of glutinous millet in the northern province of Hebei that could date back to 10,000 years, the earliest evidence of people growing the crop in the world.Lab results showed that remains of glutinous millet found at archaeological sites in Cishan Village in the city of Wu'an were harvested during the Neolithic Era between 8,700 to 10,000 years ago, scientists with the Institute of Geology and Geophysics of China Academy of Sciences (IGGCAS) said at a cultural festival held in Wu'an on Sunday.This means Cishan was the birthplace of the crop, archaeologists said.They have also found remains of foxtail millet in the pits, which could date back to between 8,700 and 7,500 years. This would be the earliest evidence of the crop's cultivation, which means that Cishan was the birthplace of foxtail millet, too, said Lu Houyuan, an IGGCAS scientist.Cultivating small-seeded dry crops was more prevalent than cultivating rice in prehistoric times, especially in China's semi-arid northern regions, Lu said.A total of 50,000 kilograms of grains have been stored in 88 pits for thousands of years at the Cishan Site, a Neolithic site discovered in 1972.In addition to grain remnants, pottery, stone tools, animal bones and bone artifacts have also been excavated from the site, which archaeologists believe will help their research in the emergence of agriculture in China.

BEIJING, Oct. 6 (Xinhua) -- China's first space lab module were in good condition and all tests went on "smoothly" during the past week, according to a statement issued by the country's space project authorities Thursday.The unmanned module, Tiangong-1, or Heavenly Palace-1, blasted off on Sept. 29 from Jiuquan Satellite Launch Center in northwest China's desert area.Tiangong-1 switched to the orbit of 362 kilometers high and had orbited the Earth for 109 times by 6:00 p.m. Thursday, the statement said.Tests on the module's remote control system, video/audio equipments, temperature/humidity sensors, docking facilities and other functions had been conducted successfully, it added.It also revealed that the Jiuquan Launch Center and other units were preparing for the launch of the Shenzhou-8 unmanned spacecraft, which is scheduled to join the Tiangong-1 later this year.Shenzhou-8 and Tiangong-1 are expected to perform China's first space docking at a height of 340 kilometers above the earth's surface.

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