The U.S. National Science Foundation (NSF) is offering a federal grant opportunity titled "Magnetospheric Physics," aimed at supporting research on the magnetized plasma envelope of the outer atmosphere. This grant focuses on various aspects of magnetospheric physics, including the interaction with solar wind, the origins of geomagnetic storms, and the coupling between the magnetosphere, ionosphere, and atmosphere, as well as supporting ground-based observational programs and laboratory experiments relevant to the geospace environment. Proposals are accepted on a rolling basis, with no cost-sharing or matching requirements, and interested applicants can find more information and submit inquiries via grantsgovsupport@nsf.gov or by visiting the NSF's program description page at http://www.nsf.gov/funding/pgm_summ.jsp?pims_id=11725.