It seems that Cash-Starved NASA May Have to Nix 1 Space Telescope to Save Others:
Based on the findings of an independent review panel (pdf), NASA has taken stock of its fleet of orbiting astrophysics telescopes and
decided which to save and which to shutter (pdf). Among the winners were the
Hubble Space Telescope, the Chandra X-Ray Observatory and the Kepler planet-hunting telescope, which will begin a modified mission designed to compensate for the recent failure of two of its four stabilizing reaction wheels. The infrared Spitzer Space Telescope, however, may be deactivated due to lack of funding. And a bid to convert data collected by the Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) into a format usable for astrophysics was also deemed too expensive. (The NEOWISE mission hunts for near-Earth asteroids that might pose a collision risk to our planet and is funded through NASA's Planetary Science Division.)
(Score: 3, Informative) by AsteroidMining on Sunday May 25 2014, @12:19PM
Spitzer has warmed up, and so is a fairly expensive mission that only has 2 (fairly short) IR channels operational, which is why it got the (provisional) axe. The so-called Senior Review [scienceblogs.com] goes into this in detail.