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Hubble is the only telescope designed to be serviced in space by astronauts. After launch by Space Shuttle Discovery in 1990, four subsequent Space Shuttle missions repaired, upgraded, and replaced systems on the telescope. A fifth mission was canceled on safety grounds following the Columbia disaster (2003).
That telescope made it possible for us to see many things in space we hadn't seen before. A space telescope is an improvement on the Earth-based telescope because it can be sent into space to send back images to Earth. Answer and Explanation: The Hubble Space Telescope was the first space telescope built by NASA. It was sent into space on April 24, 1990 and is still sending back images to Earth today. According to NASA, the Hubble Space Telescope orbits Earth at a speed of 17,000 mph, and takes pictures of stars, galaxies, planets, comets, and other space objects as it travels around the Earth. Learn more about this topic: