This firm-fixed-price delivery order for Professional Scientific Support services was awarded by the U.S. Naval Observatory, a defense agency, to Computational Physics, Inc., a for-profit scientific and technical services provider. The $1,850,890.62 contract supports the Naval Observatory's astronomy and space science missions through a range of specialized scientific, engineering, and technical services. Computational Physics has been awarded several Indefinite Delivery Vehicles (IDVs) by the Naval Observatory, including a single-award contract worth up to $72.71 million for astronomy-related services and a $4.2 million IDC for research scientist and R&D support. The company also holds a $19.2 million small business set-aside IDC for professional scientific support services. These IDVs allow the Naval Observatory to efficiently procure Computational Physics' expertise in areas such as instrumentation development, data analysis, and technical advisory services. The contract does not have a set-aside designation.