Sergey Nikolayevich Ryazansky is a Russian Biochemist and Cosmonaut. He was born in November 13, 1974 in Moscow, Russia.
Ryazansky attended school # 520 in Moscow from which he graduated in 1991 before entering Moscow State University. He graduated in 1996 as a biochemist and in 2000, he graduated from the post-graduate course of the Russian Federation State Science Center at the Institute of Biomedical Problems of the Russian Academy of Sciences. IMBP deals with most of the Russian aerospace-biology and space-chemistry studies allowing Ryazansky to gain experience in those fields working as a junior scientist, scientist and senior scientist. He started specializing in development and testing means of preventive measures to microgravity adverse impacts.
In 2003, he was selected as IMBP astronaut candidate - being the lone candidate submitted by IMBP along with five candidates selected by the Gagarin Cosmonaut Training Center and three RSC Energia selections. From 2003 to 2005, Ryazansky completed basic spaceflight training and evaluations.
In parallel, the continued his research at IMBP and in 2006, he presented a Ph.D. thesis in biology, specializing in physiology and aerospace/naval medicine (“Particular features of autokinetic motion in microgravity”).
Following basic training, he was certified as a cosmonaut-researcher (note the difference to 'test cosmonaut'). In 2007, Ryazansky entered advanced spaceflight training with focus on long-duration missions.
As part of his work at IMBP, Ryazansky became part of the Mars 500 project. Mars 500 was a psychosocial isoloation experiment completed between 2007 and 2011 by Russia, the European Space Agency and China. The experiment facility located at IMBP, Moscow, was used to isolate a crew of six volunteers to study the psychosocial aspects of an interplanetary space flight. The mock-up facility included a simulated Earth-Mars shuttle spacecraft, the ascent-descent craft, and the Martian surface.
Sergey Ryazansky was a member of the Stage 2 crew of the Mars 500 experiment. The first crew lived aboard the complex for 15 days to test the technical systems and equipment aboard to prepare for longer experiments. Stage 2 was 105-days in duration as a precursor to the 520-day isolation experiment that followed.
Ryazansky, serving as commander and his crew of three fellow Russians (one cosmonaut, a medical doctor and a sports physiologist), a French Airline Pilot and a German mechanical engineer, entered isolation on March 31, 2009. The experiment ended on July 14, 2009.
In 2010, after re-entering space flight training, Ryazansky was transferred to the Gagarin Training Center's Cosmonaut Corps. He received his certification as a test cosmonaut in 2011.
Starting in September 2011, he entered mission specific training as a backup ISS and Soyuz Flight Engineer for Expedition 35/36 before automatically becoming the prime crew for Expedition 37/38 that he will participate in starting in 2013.
Sergey Ryazansky is a honored hardware test engineer. He is married and there are three children in his family. In his spare time, he enjoys numismatics, playing the guitar, tourism and sports games.