Hubble Space Telescope - A Complete Guide

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The concept of the Hubble Space Telescope dates back to 1962, when the US National Academy of Sciences recommended the building of a large space telescope. Development and construction of such a telescope dominated the 1970's and early 1980's, and the Hubble was finally launched in 1990. A 2.4-metre optical reflecting telescope that operates from ultra-violet to near infrared wavelengths, the Hubble orbits the earth 600 kilometres above the surface. Its design is simple and modular, which is essential in allowing new components to be added as the technology is developed. The Hubble has benefited from regular servicing every few years, as astronauts add new equipment or replace faulty instruments.   more...