Timeline of rocket and missile technology

• 1903 - Konstantin Tsiolkovsky begins a series of papers discussing the use of rocketry to reach outer space, space suits, and colonization of the solar system. Two key points discussed in his works are liquid fuels[?] and staging.
• 1926 - Robert Goddard launches the first liquid fuel rocket.
• 1942 - Wernher von Braun and Walter Dornberger[?] launch the first V2 rocket at Peenemunde.
• 1949 - Willy Ley[?] publishes The Conquest of Space
• 1952 - Wernher von Braun discusses the technical details of a manned exploration of Mars in The Mars Project.
• 1953 - Colliers Magazine publishes a series of articles on man's future in space, igniting the interest of people around the world. The series includes numerous articles by Ley and von Braun, illustrated by Chesley Bonestell.
• 1957 - Launch of the first ICBM, the USSR's R-7 (8K71), known to NATO as the SS-6 Sapwood.
• 1957 - the USSR launches Sputnik I, the first artificial satellite.
• 1958 - The US launches Explorer I, the first American artificial satellite, on a Jupiter-C rocket.
• 1958 - US launches their first ICBM, the Atlas-B (the Atlas-A was a test article only).
• 1972 - US launches Pioneer 10, the first probe to achieve solar escape velocity.