09/01/2026
Areg Danagoulian, a professor in the MIT Department of Nuclear Science and Engineering, was thinking about a gap in global security: The 1967 Outer Space Treaty bans nuclear weapons in space, but there's currently no way to verify that satellites don't carry them. A nuclear detonation in low-Earth orbit would release trillions of highly energetic electrons, destroying many satellites and disrupting telecommunications, GPS, and space-based internet worldwide.
So Danagoulian proposed a way to detect them. His concept uses a satellite-based sensor system with neutron detectors that could orbit near a suspect satellite and identify neutrons generated when high-energy protons collide with radioactive material. His calculations show the system could detect a nuclear weapon with 99 percent accuracy from 4,000 meters away in about a week, or in just one hour from 1,000 meters.
"You can fake intelligence," Danagoulian says, "but you can't fake physics." Published in Nature, the feasibility study aims to encourage further research and development. While many practical considerations remain, Danagoulian believes scientific verification could encourage nonproliferation and strengthen international trust.
https://news.mit.edu/2026/mit-researcher-proposes-way-to-detect-nuclear-weapons-in-space-0708