Herschel Space Observatory
http://www.ipac.caltech.edu/Herschel/
The Herschel Space Observatory is the European Space Agency's fourth "Cornerstone Mission" and deploys a passively cooled 3.5 meter telescope to observe the Far-infrared and Submillimeter Universe. Herschel is planned as a three year observatory mission, with a launch date scheduled for after August 2007. It will be launched on the same vehicle as the Planck mission, where both will orbit independently around the second Earth-Sun Lagrange point.

NASA is a partner in the Herschel Mission, with US participants contributing to the mission; providing mission-enabling instrument technology and sponsoring the NASA Herschel Science Center at IPAC (the NHSC). The NHSC is established to provide the US astronomical community with science and observational support throughout all phases of the Herschel Mission.