Explained: What is NASA’s Spitzer Space Telescope?

News: Spitzer Space Telescope will conclude its mission on 30th January 2020


About Spitzer Space Telescope

  • Launched in 2003, it is a space-borne observatory and is part of NASA’s “Great Observatories”.
  •  It uses an ultra-sensitive infrared telescope to study asteroids, comets, planets and distant galaxies.


  • First telescope to detect light from an exoplanet
  • found a ring of Saturn in 2009
  •  Made the first exoplanet weather map of temperature variations over the surface of a gas exoplanet.

Additional Information

NASA’s series of Great Observatories satellites:

  • They are four large, powerful space-based astronomical telescopes.
  • The telescopes other than Spitzer Space Telescope are Hubble Space Telescope, Compton Gamma Ray Observatory, and the Chandra X-ray Observatory.