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also called rockets motors, have been used since the 1200s to launch fireworks and small military rockets
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on april 12 1961, sovietic cosmonaut (astronaut) yuri Gagarin became the fist person travel space when made a single orbit around the earth in his Vostok 1 spacecreft.
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In 1926 Robert Goddard,"the father of modern Rockery"invented the liquid fuel rockets
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wernher von braun german researchers designed and built the v-2 ballistic missile one of the first modern rockets.
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the united states responded in january 1954 with its first satellite, a 31- pounds (14-kg.) craft named Explorer 1.
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spuntic the space age began on october 4, 1957, when the Soviet Union launched sputnik 1,the first artificial object to orbit the Earth
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a year later, in 1962 john glenn in the friendship 7 mercury spacecraft became the first american to orbit the earth
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with the apollo program, america finally took the lead in the space race.much larger than gemeni, the Apollo spacecreft was designed to confortably accommodate three astronauts,
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became the first human being to set foot on another world.
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space stations in which people could live and work for months at a time
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in contrast to the cramped salyut stations, skylab contained a huge laboratory, spacious living quartes, and even showers for the austronauts
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like mir, the ISS consists of many modules that are built on the ground and then individually sent up and attached to the portion of the station already in orbit
