The Saturn V (pronounced "Saturn Five") was a multistage liquid-fuel expendablerocket used by NASA for Apollo and Skylab missions between 1967 and 1972. In total NASA launched twelve Saturn V rockets, plus one derived Saturn INT-21, with no loss of payload. It remains the largest and most powerful launch vehicle ever brought to operational status, in terms of height, mass and payload capacity. The Soviet Energia, which flew two test missions in the late 1980s before being cancelled, had slightly more takeoff thrust.
Yuri Alexeyevich Gagarin (9 March 1934 – 27 March 1968) was a Soviet cosmonaut and the first human to orbit the earth. Yuri Gagarin joined the Soviet Air Force in 1955 and graduated with honors from the Soviet Air Force Academy in 1957. Soon afterward, he became a military fighter pilot. By 1959, he had been selected for cosmonaut training as part of the first group of USSR cosmonauts. Yuri Gagarin flew only one space mission. On April 12, 1961 he became the first human to orbit Earth. Gagarin's spacecraft, Vostok 1, circled Earth at a speed of 27,400 kilometers per hour. The flight lasted 108 minutes. At its highest point, Gagarin was about 200 miles (327 kilometers) above Earth. Once in orbit, Yuri Gagarin had no control over his spacecraft. Vostok's reentry was controlled by a computer program sending radio commands to the space capsule. Although the controls were locked, a key had been placed in a sealed envelope in case an emergency situation made it necessary for Gagarin to take control. As was planned, Cosmonaut Gagarin ejected after reentry into Earth's atmosphere at an altitude of 20,000 feet and landed by parachute. As pilot of the spaceship Vostok 1, he proved that man could endure the rigors of lift-off, re-entry, and weightlessness. As a result of his historic flight he became an international hero and legend. Colonel Gagarin died on March 27, 1968 when the MiG-15 airplane he was piloting crashed near Moscow. He was given a hero's funeral, his ashes interred in the Kremlin Wall. He is popularly known as “The Columbus of the Cosmos”.
A close-up view of the unpiloted JapaneseHTV-1, the first H-II Transfer Vehicle (HTV), in the grasp of the International Space Station's robotic Canadarm2. The crew of Expedition 20 used the station's robotic arm to grab the cargo craft and attach it to the Earth-facing port of the Harmony node.
