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September 8, 2017

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Quiet please, scientists at work studying space

IT is the quietest tourist site in China — phones, cameras and cars are not allowed. Even planes have been rerouted to avoid disturbance, but it still draws thousands of tourists.

Since it began operating in September last year, the world’s largest radio telescope, in southwest China’s Guizhou Province, has received 240,000 tourists, local authorities said.

The Five-hundred-meter Aperture Spherical radio Telescope (FAST) is a single-dish telescope, with a diameter of half a kilometer.

It was built in the Dawodang depression, a natural karst basin in Pingtang County, an impoverished area in mountainous Guizhou.

The telescope is used to probe space for the faintest signs of life and is sensitive to any electromagnetic interference.

Nearly 10,000 residents who lived in the core zone, within five kilometers of the telescope, have been relocated.

“All phones and cameras must be handed in if visitors want to enter the core area,” said local tour operator Liu Xingwu.

“Vehicle engine ignitions also produce electromagnetic waves, so all sightseeing vehicles which enter the core zone have been modified to remove magnetic interference,” Liu said.

With a total investment of 1.2 billion yuan (US$188 million), the telescope has also created a boom in tourism for the county, which is home to around 330,000 people.

An astronomical and cultural park is being extended. New theaters and exhibition centers will open ahead of the National Day holiday in October, said Shi Bangze, director of the county’s tourism bureau.

Shi said that any increase in tourist numbers must not be allowed to interfere with scientific studies underway at FAST.

“Scientists are using FAST to probe space, and they do not want any disturbances, so tourism can only be developed on the condition that the research functions are not impeded,” he said.

The county has instigated a daily cap of 2,000 visitors within the core area.

“Most travelers come on weekends and holidays. We use manual film cameras rather than digital ones to take photos of the visitors. The cameras have been tested for interference,” Shi said.

“Once the daily limit is reached, we divert tourists to other scenic areas further away from the telescope,” he said.




 

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