NASA's Spitzer telescope completes 15 yrs in space

NASA's Spitzer Space Telescope, the youngest member of the “Great Observatory” programme, has completed 15 years in space. The Great Observatories are four big-ticket space telescopes — Spitzer, Hubble Space Telescope, the Compton Gamma Ray Observatory (CGRO), and the Chandra X-ray Observatory — designed to view the universe in different and complementary wavelengths of light.

from The Pioneer - world https://ift.tt/2PE5DD4
via