when was the hubble space telescope launched by space shuttle discovery
Hubble Space Telescope Hubble is the only telescope designed to be serviced in space by astronauts. After launch by Space Shuttle Discovery in 1990, five subsequent Space Shuttle missions repaired, upgraded, and replaced systems on the telescope, including all five of the main instruments. The fifth mission was initially canceled on safety grounds following the Columbia disaster (2003). However, after spirited public discussion, NASA administrator Mike Griffin approved the fifth servicing mission, completed in 2009. The telescope is operating as of 2018[update], and could last until 2030â€“2040.[3] Its scientific successor, the James Webb Space Telescope (JWST), is scheduled for launch in March 2021.[8]
Voyager 1 Voyager 1 is a space probe launched by NASA on September 5, 1977. Part of the Voyager program to study the outer Solar System, Voyager 1 launched 16 days after its twin, Voyager 2. Having operated for 40 years, 7 months and 4 days as of April 9, 2018, the spacecraft still communicates with the Deep Space Network to receive routine commands and return data. At a distance of 141 AU (2.11×1010 km), approximately 21 billion kilometers (13 billion miles) from the Sun as of January 2, 2018,[3] it is the farthest spacecraft and man-made object from Earth.