The latest STPSat-7 launch occurred on April 7, 2026, at 4:33 a.m. PDT, with NRL payloads aboard.

GOSAS is a CubeSat-compatible dual GPS receiver that enhances navigation accuracy and space weather data quality, extending the GROUP-C experiment that identified terrestrial GPS interference and informed GOSAS goals since 2020.

STP supports DoD/DoW RDT&E by providing flight opportunities, payload integration, and on-orbit operations, with ongoing inter-service collaboration and oversight by DoD Space Systems Command, underlining mission significance for national space capabilities.

Three experimental payloads aboard STPSat-7—LARADO for detecting and characterizing small orbital debris, GOSAS for analyzing the GNSS environment and space weather data, and GARI-1C for gamma-ray sensing and testing radiation-hardened/space-qualification of COTS electronics—demonstrate a blend of scientific exploration with defense-oriented aims.

NRL confirms LARADO, GOSAS, and GARI-1C as the trio of payloads on the STPSat-7 mission, built to advance debris modeling, navigation reliability, and radiation-hardened electronics testing.

USSF Lt. Col. Brian Shimek says the mission’s success highlights the critical role of research and development in maintaining the United States’ strategic edge in space.

NRL’s Space Science Division conducts multidisciplinary research in solar-terrestrial physics, astrophysics, and atmospheric sciences, with on-site coordination at Kirtland AFB to support defense applications through collaboration mechanisms like CRADAs and licensing.

The STPSat-7 spacecraft is part of the STP-S29A mission and signals ongoing advances in Navy and national security space capabilities.

LARADO focuses on mitigating debris risks in low Earth orbit, refining debris models with NASA’s Space Weather Program funding since FY2022.

The mission illustrates how scientific exploration is integrated with defense objectives to enhance environmental monitoring, navigation reliability, and threat detection from orbit, underscoring space as a contested and strategic domain.

NRL launched three experimental payloads on the DoD Space Test Program’s STPSat-7 mission from Vandenberg on April 7, 2025, aboard a Northrop Grumman Minotaur IV, marking progress in U.S. space-based capabilities.

GARI-1C uses gadolinium aluminum gallium garnet scintillators to improve gamma-ray detection, providing better energy resolution, lower power, and smaller size, and acting as a testbed for space qualification of commercial electronics in radiation-rich environments.