NASA's Spitzer Space Telescope (Mission Overview) by NASA Jet Propulsion Laboratory on YouTube When the helium coolant ran out in 2009, two of its three instruments — an infrared spectrograph ...

NASA turned off its Spitzer Space Telescope yesterday (Jan. 30), ending a 16-year mission. The agency at first stretched the observatory's tenure to overlap with that of the next great infrared ...

After studying the cosmos for 16 years, NASA's Spitzer Space Telescope will shut down Thursday after mission officials send the observatory its final command.

Artist's view of the Spitzer Space Telescope against the infrared sky. The band of light is the glowing dust emission from the Milky Way galaxy seen at 100 microns (as seen by the IRAS/COBE missions).

After 16 years of incredible discoveries, NASA's retiring Spitzer Space Telescope is going gently into that good night, slumbering against a background of stars -- the very ones it helped study.

NASA's newest astrophysics space telescope launched in March on a mission to create an all-sky map of the universe. Now ...

The first ever space telescope, the Orbiting Astronomical Observatory 2 (OAO-2), was launched into the low Earth orbit in ...

A Delta II rocket launched the Spitzer Space Telescope two decades ago, boosting it to an Earth-trailing orbit, where it drifted away from our planet at a rate of about 15 million kilometers a year.

Astronomers have discovered a strange new object in our Milky Way galaxy. The celestial object is emitting X-rays around the same time it's shooting out radio waves.

Infrared data from NASA’s now-retired Spitzer Space Telescope (shown in red, green, and blue) as also included. Cartwheel Galaxy The Cartwheel Galaxy as seen by the James Webb Space Telescope ...

After studying the cosmos for 16 years, NASA's Spitzer Space Telescope will shut down Thursday after mission officials send the observatory its final command.