Oleg Kononenko is a Russian cosmonaut born on June 21, 1964, in Chervonograd, Ukraine. He graduated from the Kryvyi Rih Mining Institute and later joined the Russian space program. Kononenko has participated in multiple space missions, including long-duration stays on the International Space Station (ISS). Throughout his career, Kononenko has accumulated over 500 days in space, making him one of the most experienced astronauts. He has contributed to various scientific experiments and technology demonstrations aboard the ISS, enhancing our understanding of space and its effects on the human body.