A technician of the Atacama Large Millimeter/submillimeter Array (ALMA) project, works in the maintenance of the radio telescope receptors at the ALMA operational center in San Pedro de Atacama, Atacama desert, some 1500 km north of Santiago, Chile, on May 18, 2022. - The ALMA powerful radiotelescope, located at over 5,000 metres of height in Atacama desert, considered the most advanced instrument in the world, started operating after being closed for two years during the COVID-19 pandemic. (Photo by MARTIN BERNETTI / AFP)