![]() Hubble tracking and data relay system (TDRS) The mission also involved several upgrades to extend Hubble’s service life until 2014. The telescope was attached with a new device to help de-orbiting when it is decommissioned. The final Service Mission 4 (SM4), flown in May 2009, installed two new scientific instruments and repaired two failed instruments. Nasa, however, conducted five space shuttle servicing missions on the HST for extending its operational life. The observatory was originally designed to have a lifespan of 15 years. STScI is operated for Nasa by the Association of Universities for Research in Astronomy (AURA). The science operations and control of the telescope lie in the hands of the Space Telescope Science Institute (STScI) at the Johns Hopkins University Homewood Campus in Baltimore, Maryland. HST is a 2.4m reflecting telescope which was launched into a low-Earth orbit (600km) by the crew of the space shuttle Discovery (STS-31) in 1990. The aim of the observatory is to operate a long-lived space-based observatory for the benefit of the international astronomical community. The HST is a co-operative programme of the European Space Agency (ESA) and the National Aeronautics and Space Administration (Nasa). Hubble celebrated its 20th anniversary in orbit on 24 April 2010. HST is an observatory, originally conceived in the 1940s and finally made operational in the 1990s. Hubble Space Telescope (HST) was launched into orbit around Earth on 25 April 1990. The Hubble Space Telescope (HST) was launched into orbit around Earth on 25 April 2001.Īn astronaut during the satellite's three servicing visits.
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