The Hubble Space Telescope (HST), is a space telescope  that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile and has been a vital research tool and as a public relations boon for astronomy.

 The Hubble telescope is named after astronomer Edwin Hubble and is one of NASA's Great Observatories.

 The Space Telescope Science Institute (STScI) selects  Hubble's targets and processes the resulting data, while the Goddard Space Flight Center(GSFC) controls the spacecraft.

Hubble features a 2.4 m (7 ft 10 in) mirror, and its five main instruments observe in the ultraviolet, visible, and near-infrared regions of the electromagnetic spectrum.