Yuri Onufrienko is a Ukrainian astronaut known for his contributions to space exploration. He was born on February 21, 1961, in Kryvyi Rih, Ukraine. Onufrienko flew on several missions, including a notable flight to the International Space Station (ISS) in 1999, where he conducted scientific research and experiments. During his career, Onufrienko spent a total of over 365 days in space, making him one of the most experienced astronauts. He is also recognized for his role in promoting science and technology in Ukraine, inspiring future generations to pursue careers in space and engineering.