This well-known telescope is launched into low Earth orbit, at an altitude of about 547 km) in 1990 and remains in operation to this day. Although it is not the first telescope, it is definitely one of the largest and the most versatile. After Galileo’s telescope, it is marked as the most significant advancement in astronomy. This vital research tool is named after the American astronomer Edwin Hubble, who confirmed an ‘expanding’ universe, providing a ground for big-bang theory. The Hubble Telescope has made more than 1.3 million observations since it was launched. This 43.5 feet long giant generates about 10 terabytes of new data each year.
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