Study Shows a Single Nuclear Blast Could Disable 99% of Satellites in a Matter of Days

Coverage from WION, UA.NEWS, The Independent and ScienceAlert reports that a single nuclear explosion in space would not strike Earth directly but would instead generate intense radiation belts capable of disabling 99 percent of satellites in low Earth orbit within a matter of days. The study highlights that the blast itself is not the primary threat; rather, the resulting high-energy particles would linger in the magnetosphere, progressively degrading satellite electronics, solar arrays and sensors until most spacecraft in the affected orbital regime cease to function. Researchers emphasize that the effect would be indiscriminate, impacting military, commercial and scientific satellites alike, and that the debris-free nature of the attack makes attribution and deterrence uniquely difficult.

The four outlets frame the finding as a strategic wake-up call for space-faring nations and private operators. WION stresses that the aftermath "will spell doom" for critical infrastructure, while The Independent characterizes the scenario as "enough to wipe out almost all satellites." ScienceAlert leads with the study's headline figure — 99 percent disablement in days — and UA.NEWS mirrors the same percentage and timescale. All four cite the same underlying research without naming the specific institution or journal, and none provide direct quotations from the study authors. The coverage converges on the speed and scale of the projected satellite loss, presenting it as a near-term vulnerability rather than a theoretical exercise.

The coverage does not specify whether the study models a specific yield, altitude or latitude for the detonation, nor does it detail any proposed hardening or mitigation strategies for current or future satellites.

Watch for follow-up analysis from space agencies, defense departments and satellite operators on whether existing radiation-hardening standards are sufficient, whether new monitoring systems could detect a covert nuclear deployment in orbit, and whether diplomatic channels will pursue strengthened verification of the existing ban on orbital nuclear weapons. The coverage does not indicate any imminent test or threat, but the convergence of major outlets on the same study suggests the finding is being treated as a credible addition to space-security risk assessments.