The National Science Foundation (NSF) is offering a grant opportunity titled "Geospace Facilities," aimed at supporting research on the Earth's upper atmosphere through the use of large incoherent-scatter radar facilities and the SuperDARN coherent scatter radar system. This initiative encourages basic research that is closely linked to the Aeronomy and Magnetospheric Physics Programs, with facilities strategically located from Greenland to Peru, equipped with advanced optical diagnostic instruments. Proposals for this grant can be submitted at any time, with no cost-sharing or matching requirements, and interested applicants can find additional information and support by contacting NSF grants.gov support at grantsgovsupport@nsf.gov or visiting the NSF website.