United Nations Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies. United Nations General Assembly Resolution 2222 (XXI); entered into force 10 October 1967. https://www.unoosa.org/oosa/en/ourwork/spacelaw/treaties/outerspacetreaty.html (1967).
Carpenter, J. M. Pulsed spallation neutron sources for slow neutron scattering. Nucl. Instrum. Methods 145, 91–113 (1977).
Google Scholar
Krutov, M. & Dobrynin, S. In Russia’s war on ukraine, effective satellites are few and far between. Radio Free Europe/Radio Liberty https://www.rferl.org/a/russia-satellites-ukraine-war-gps/31797618.html (2022).
Narang, V. “Nuclear Threats and the Role of Allies”: Remarks by Acting Assistant Secretary of Defense for Space Policy Dr. Vipin Narang at CSIS. US Department of War https://www.war.gov/News/Speeches/Speech/Article/3858311/nuclear-threats-and-the-role-of-allies-remarks-by-acting-assistant-secretary-of/ (2024).
Stassinopoulos, E. G. The STARFISH Exo-atmospheric, High-altitude Nuclear Weapons Test. In Proc. Hardened Electronics and Radiation Technology (HEART) 2015 Conference (NASA, 2015).
Ensuring American Space Superiority. White House Executive Order 14369 https://www.whitehouse.gov/presidential-actions/2025/12/ensuring-american-space-superiority/ (18 December 2025).
Porteous, I. Verifying the Outer Space Treaty’s Nuclear Ban: Technical and Political Feasibility of In-Space Satellite Inspection https://doi.org/10.25740/jm671yx6641 (Stanford University, 2025).
Mazur, J. E., O’Brien, T. P. & Looper, M. D. The relativistic proton spectrometer: a review of sensor performance, applications, and science. Space Sci. Rev. 219, 26 (2023).
Google Scholar
Johnston, W. R., O’Brien, T. P., Huston, S. L., Guild, T. B. & Ginet, G. P. Recent updates to the AE9/AP9/SPM radiation belt and space plasma specification model. IEEE Trans. Nucl. Sci. 62, 2760–2766 (2015).
Google Scholar
Ginet, G. et al. AE9, AP9 and SPM: new models for specifying the trapped energetic particle and space plasma environment. Space Sci. Rev. 179, 579–615 (2013).
Google Scholar
Harvey, J. R. & Michalowski, S. Nuclear weapons safety: the case of Trident. Sci. Glob. Secur. 4, 261–337 (1994).
Google Scholar
Reichelt, B. et al. Ultra-fast single-crystal CVD diamonds in the particle time-of-flight (PTOF) detector for low yield burn-history measurements on the NIF. Rev. Sci. Instrum. 96, 013501 (2025).
Google Scholar
Ogasawara, K. et al. Single crystal chemical vapor deposit diamond detector for energetic plasma measurement in space. Nucl. Instrum. Methods Phys. Res. A 777, 131–137 (2015).
Google Scholar
Weinfurther, K., Mattingly, J., Brubaker, E. & Steele, J. Model-based design evaluation of a compact, high-efficiency neutron scatter camera. Nucl. Instrum. Methods Phys. Res. A 883, 115–135 (2018).
Google Scholar
Poitrasson-Rivière, A. et al. Dual-particle imaging system based on simultaneous detection of photon and neutron collision events. Nucl. Instrum. Methods Phys. Res. A 760, 40–45 (2014).
Google Scholar
Keefe, K. et al. Design and characterization of an optically segmented single volume scatter camera module. IEEE Trans. Nucl. Sci. 69, 1267–1279 (2022).
Google Scholar
Pant, P., Banerjee, K., Roy, P., Shil, R. & Saha, A. K. Characterization of EJ-276D plastic scintillator and its comparison with EJ-299-33A and BC-501A. J. Instrum. 19, 10036 (2024).
Google Scholar
Danagoulian, A., Miske, J. N. & Klein, E. A. Grasshopper, a Geant4 front end: validation and benchmarking. In Proc. 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) 1–7 (IEEE, 2021).
Agostinelli, S. et al. Geant4—a simulation toolkit. Nucl. Instrum. Methods Phys. Res. A 506, 250–303 (2003).
Google Scholar
Allison, J. et al. Recent developments in Geant4. Nucl. Instrum. Methods Phys. Res. A 835, 186–225 (2016).
Google Scholar
Chan, R. US buzzes China’s military satellites in unfolding space rivalry. Newsweek https://www.newsweek.com/us-china-news-military-satellites-close-encounter-orbit-2067071 (2025).
Clonts, M. Espionage in orbit: satellite or spy? Kratos Space https://www.kratosspace.com/constellations/articles/espionage-in-orbit-satellite-or-spy (2023).
Intelsat’s satellites sit between a rock + a hard place as Russian military satellites are a bit too cozy. Satnews https://satnews.com/story.php?number=324434767 (2015).
Update on Luch Olymp 2 (NORAD ID: 55841) Kratos Space https://www.kratosspace.com/sdatracker (2025).
Hitchens, T. The stellar dance: US, Russia satellites make potentially risky close approaches. Breaking Defense https://breakingdefense.com/2019/04/the-stellar-dance-us-russia-satellites-make-potentially-risky-close-approaches/ (2019).
PROBA-3 (Project for On-Board Autonomy-3). eoPortal https://www.eoportal.org/satellite-missions/proba-3#proba-3-project-for-on-board-autonomy-3 (2026).
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