"We are lucky to be in a special era, with the next generation of giant telescopes on the way. There may be some exciting discoveries in the following 10 to 20 years," says Mao Shude, director of the Center for Astrophysics of the Beijing-based Tsinghua University. FAST, shown below, now under construction deep in the mountains of southwest China's Guizhou Province, will become the world's largest radio telescope once completed in September this year, which has spurred several of China's leading astronomers to comment publicly about the potential as well as the unknown dangers to humanity of the search for advanced extraterrestrial civilizations.

According to mainstream scientific opinion, it is possible that extraterrestrial life exists, as the Earth is not unique in the universe. Our galaxy has hundreds of billions of stars, many with solar-like planetary systems, and there are hundreds of billions of galaxies in the universe. So it' s reasonable to infer that Earth-like planets might be common, and the universe could teem with life.

"I think primitive life is likely to be abundant, but intelligent life might be rarer," says Mao, also director of the Galaxy and Cosmology Division of the National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences.

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