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‘Factory of discoveries’: China thinks big for massive science projects to explain the universe

  • How large-scale research facilities helped China transform from making shoes and shirts to discovering cosmic ray and pulsars
  • Not all Chinese scientists believe the huge projects are worth the mammoth expense

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Cao Zhen, a researcher at the Institute of High Energy Physics (IHEP) is pictured with a model of China's Large High Altitude Air Shower Observatory (Lhaaso). Photo: Xinhua
Stephen Chen

Never have there been so many of these costly, shiny, futuristic-seeming gadgets in one place – 1,188 muon detectors, 4,901 electromagnetic particle detectors, 78,000 square metres of water Cherenkov detector array and 18 wide-angle gamma-ray telescopes.

On a 4,410-metre-high mountain top to the southeast of Tibet, these devices form the Large High Altitude Air Shower Observatory (Lhaaso), the largest cosmic ray detector in the world.

On Monday, researchers from Lhaaso announced the detection of the brightest cosmic light that, by the law of physics, should not exist. More importantly, Lhaaso helped Chinese astronomers discover in less than a year over a dozen mysterious sources in our galaxy that were constantly producing impossibly energetic cosmic rays known as “Oh-My-God” particles.

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China’s Large High Altitude Air Shower Observatory (Lhaaso) in Daocheng is more than 4,400 metres above sea level. Photo: IHEP
China’s Large High Altitude Air Shower Observatory (Lhaaso) in Daocheng is more than 4,400 metres above sea level. Photo: IHEP

“It opens a window to a brand new world,” said Cao Zhen, lead scientist of the Lhaaso project.

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Not long ago, to most people outside, China was a world factory for making cheap products. Even within the country, there remains a popular saying: “We make 800 million shirts to buy a Boeing jet plane”.

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