NASA selected Orbital Sciences Corp. to design, manufacture, integrate, and test a new low-Earth orbit space science satellite that will study X-ray polarization in space. Under the $40 million contract, Orbital will provide the spacecraft bus and conduct mission operations for the Goddard Space Flight Center’s (GSFC) Gravity and Extreme Magnetism (GEMS) mission. The GEMS mission is currently scheduled to launch no later than 2015. In addition to its program management role, GSFC will provide the X-ray polarimeter instrument and oversee the Science Operations Center, science data processing, systems engineering and education, and public outreach. Other program partners include NASA’s Ames Research Center, the University of Iowa, and ATK Inc.