Man-Made Satellites

Before the age of powered space exploration began in the 1950's, telescopes were the primacy took used to study the universe.  Galilee (1564 - 1642) was responsible for pioneering the use of the  refractor telescope and Isaac Newton ( 1642 - 1727) designed the reflecting telescope.  Examples of both are still being used today. These telescopes and others such as x-ray, gamma ray, and radio telescopes have been launched into space to make their observations and collect data at closer range.  In addition, space probes such as Voyager 2, Pioneer 10, Galileo, the Viking Lander and the Soviets Lunokhod 1 have been carried into space by rockets to examine and study our neighboring planets, the outer limits or our solar system and beyond. The first Excitement of manned space flight came in the 1960's.  The Vostok 1 ww the craft in which Yuri Gagarin, a Solviet cosmonaut, made history by being the first space person to orbit the Earth on April 12, 1961.  Eventually, space stations such as Sky lab and Mir allowed man to live in space for weeks and months at a time.


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