Hubble Space Telescope

Edwin Hubble and the Hooker Telescope

1918

With this telescope in the 1920's Edwin Hubble measured distance and velocity of galaxies, work which led to discovery of the expanding galaxy. (https://asd.gsfc.nasa.gov/archive/hubble/overview/timeline.html)

Large Space Telescope

1969

Astrophysicist Lyman Spitzer gathered the support of other astronomers for a "large orbital telescope". (https://asd.gsfc.nasa.gov/archive/hubble/overview/timeline.html)

American Congress approves funding

1977

America Congress approves funding for large space telescope.
(http://www.spacetelescope.org/about/history/timeline/)

HST deployed

Apr 25, 1990

Hubble Space Telescoped deployed into orbit. (https://www.nasa.gov/mission_pages/hubble/story/timeline.html)

Servicing Mission 1

1993

First servicing mission for the Hubble Telescope. (https://asd.gsfc.nasa.gov/archive/hubble/overview/timeline.html)