In the period from June 16 to 21, the third scientific vacation “Scientist of the 21st Century” was held, organized by the Institute of Spectroscopy of the Russian Academy of Sciences, implemented with the support of the Department of Education and Science of the City of Moscow for students of grades 8-11, many of whom are students of participating schools of the project “Academic class in Moscow School”. This time 32 schoolchildren took part in the event.