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European Organization for Nuclear Research - CERN

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"CERN, the European Organization for Nuclear Research, is one of the world’s largest and most respected centres for scientific research. Its business is fundamental physics, finding out what the Universe is made of and how it works. At CERN, the world’s largest and most complex scientific instruments are used to study the basic constituents of matter — the fundamental particles. By studying what happens when these particles collide, physicists learn about the laws of Nature."




Fabiola Gianotti, Directrice générale

Annual reports
2021 Key figures


We don’t know what 95% of the universe is made of


4.9 billions

4.9 billion people use the World Wide Web, invented at CERN and offered to the world for free



150'000 visitors from all over the world explore CERN each year  

Source: CERN