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Sergei Korolev was a Soviet spacecraft designer and rocket engineer who played an important role during the Space Race between the Soviet Union and the United States of America in the 1950s and 1960s. He was largely responsible for developing the R-7 Rocket and launching Yuri Gagarin into space. Sergei Korolev also launched Belka, Strelka, and Laika into space.
Igor Sikorsky was a Russian-American aviator known for his pioneering contributions to the development of both helicopters and fixed-wing aircraft. Born in Russia, he immigrated to US as a young man and founded the Sikorsky Aircraft Corporation in 1923. He is also credited for developing the first of Pan American Airways' ocean-crossing flying boats.
Alexander Stepanovich Popov was a Russian physicist best remembered for his pioneering work in transmitting radio signals. One of the first inventors to come up with a radio receiving device, Popov's work was contemporaneous with the groundbreaking work of Italian inventor Guglielmo Marconi. Popov's life and career inspired the 1949 biographical film Alexander Popov which was directed by Herbert Rappaport.
Russian theologian Pavel Florensky is best remembered for his essay The Pillar and the Ground of Truth. During Stalin’s regime and amid a phase of national atheism, he was sent to jail and also banished to Siberia for his religious beliefs, which he refused to renounce.
Svyatoslav Fyodorov not just made a name for himself as an ophthalmologist but had also stepped into Russian politics, contesting as a presidential candidate. One of the pioneers of refractive surgery, he developed radial keratotomy, the first surgical cure of myopia, or nearsightedness, and a surgical treatment for glaucoma, too.
