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The Cosmic Origins Spectrograph (COS) is a highly sensitive ultraviolet spectrograph developed for the Hubble Space Telescope (HST) that will be installed during servicing mission 4 in September 2008. This instrument has been developed by the University of Colorado and Ball Aerospace. Several members of the APS department (Professors Green, Linsky, Shull, Snow, and Stocke) have been working on the project since its selection by NASA in 1997. Launch was originally planned for 2004, but the Columbia disaster resulted in the cancellation of the Hubble servicing mission. However, in 2006, NASA administrator Griffin re-instated the servicing mission, and COS, along with a new camera for Hubble, the Wide Field Camera III, new batteries, gyroscopes and other repairs, will now take place in 2008.

COS is far more sensitive than the previous ultraviolet spectrographs aboard Hubble, allowing scientists to observe more distant and fainter objects, probing the structure of the cosmos. Our goal is to map the structure and composition of the "nearby" universe (within the nearest few billion light years) to test the models of cosmological evolution and creation. The CU led team has over one month of Hubble observations guaranteed over the three years after launch in order to execute its science program, and as many as twelve new scientists will join the team over that time to analyze and interpret the data. The first three of these new team members will arrive in the fall of 2007. Hundreds of other scientific researchers around the world will also use COS for a host of scientific endeavors, and we look forward to its continued operation until 2015.


Professor Jason Glenn is leading CU-Boulder's involvement in the design and construction of the Cornell Caltech Atacama Telescope, a 25-meter sub-millimeter telescope to be located in the Chile's Atacama desert. CCAT will study solar systems, stars and galaxies at the earliest stages of their formation. Professors John Bally, Jack Burns, Webster Cash, Jeremy Darling, and Michael Shull are also involved in the CCAT project.