The National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy, contributes to space activities through planetary defense and the development of space-based power systems. NNSA leverages its expertise in nuclear technology, simulation, and engineering from its national laboratories to address threats from near-Earth objects and to design safe and efficient power sources for space exploration. They partner with agencies like NASA and the Department of Homeland Security, offering capabilities in asteroid characterization, threat mitigation, and modeling. NNSA's activities support national security objectives and the advancement of space exploration technologies.
All verified mentions of this organization in source documents.
On July 23, 2026, the National Nuclear Security Administration delivered its fifth next-generation Global Burst Detector sensor payload to the U.S. Space Force.
The National Nuclear Security Administration funds the sensors in the Global Burst Detection system.
The JETSON reactor design draws heavily from the 2018 Kilopower Reactor Using Stirling Technology (KRUSTY) demonstration led by NASA and the Department of Energy’s National Nuclear Security Administration.
STP-3 consists of the STPSat-6 satellite that hosts the National Nuclear Security Administration’s Space and Atmospheric Burst Reporting System-3 (SABRS-3) package and NASA’s Laser Communications Relay Demonstration (LCRD) experiment.
The primary payload, STPSat-6, hosted the National Nuclear Security Administration’s Space and Atmospheric Burst Reporting System 3 (SABRS-3) sensor designed to detect nuclear explosions.