urn:nasa:pds:context:facility:observatory.gbo 1.2 1.22.0.0 Product_Context 2026-07-07 1.2 Removed duplicate Internal_Reference entries from Reference_List. 2025-01-07 1.1 Updated schema version. Adding missing "investigation" references. Adding missing "telescope" references. 2021-04-09 1.0 Initial urn:nasa:pds:context:telescope:gbo.gbt_100m facility_to_telescope urn:nasa:pds:context:investigation:individual.campbell_venus_radar facility_to_investigation urn:nasa:pds:context:instrument:gbo.gbt_100m.4mm_receiver facility_to_instrument Green Bank Observatory Observatory

155 Observatory Rd., Green Bank, WV, 24944

USA Green Bank Observatory, located in West Virginia, is a radio observatory specializing in radio astronomy, studying pulsars, galaxies, and cosmic phenomena using the world's largest fully steerable radio telescope.