US Space Command brought together more than 60 commercial companies and allies from four nations for a classified wargame simulating a nuclear detonation in orbit, Gen. Stephen Whiting revealed Tuesday. The exercise modeled a worst-case scenario that officials say would incapacitate thousands of satellites and disrupt global communications for up to a year. The simulation marks a new Pentagon strategy to leverage private-sector innovation against a threat that one former defense official called an “attack on the world.”
The Apollo Insight exercise, the first in a planned series of four this year, was conducted at a classified level and included participants from Australia, Canada, New Zealand, and the United Kingdom. Space Command described the discussions as covering domain awareness for detection and characterization of threats, along with the broader risks to US and allied space superiority. The scenario is not purely theoretical.
Two years ago, Rep. Mike Turner (R-Ohio), chair of the House Intelligence Committee, publicly warned that Russia was moving to deploy a nuclear weapon in orbit. Biden administration officials later confirmed that Russia is considering such an action.
It would violate the Outer Space Treaty’s ban on placing weapons of mass destruction in space. Here is what the study actually says. A nuclear detonation in low-Earth orbit would likely destroy or disable thousands of satellites immediately.
The resulting radiation and debris would render portions of that orbital band unusable for up to a year, according to US officials cited by Ars Technica. Knock-on effects would ripple through every nation that depends on space-based surveillance, communications, and navigation. Gen.
Whiting, the senior officer in charge of Space Command, discussed the wargame series during a Tuesday event hosted by the Mitchell Institute for Aerospace Studies. “We’ve done one already,” Whiting said. “We did one focused on a nuclear payload on orbit, which, of course, is a future we do not want to see, and that would violate the Outer Space Treaty.” He added that the goal was to gather industry insights on both current capabilities and future technologies that could help respond to such an event. The Pentagon’s embrace of commercial space firms has accelerated sharply. Whiting called the US commercial space industry “a massive advantage” and pointed to investment levels, innovation, and speed of delivery as critical assets.
The war in Ukraine has underscored that point. Commercial satellite networks like Starlink have provided essential battlefield communications, while private drone and anti-drone technologies have become daily tools of modern warfare. The Space Force has led this push.
It has signed contracts with emerging space companies—non-traditional primes in military parlance—to buy services, manufacture satellites and payloads, and launch rockets. Commercial firms now or will soon provide the military with overhead imagery, navigation, refueling, weather data, and surveillance of other satellites in space. Whiting also described a more tactical use for commercial satellites.
Space Command and the Space Force could use them as targets to test the military’s ability to continuously track an object through a “high delta-V” maneuver—a large impulse that significantly changes a satellite’s orbit. Such maneuvers could be used by an adversary to escape detection or set up an attack on a US satellite. Russia’s recent behavior adds urgency to the exercises.
Moscow has launched several mysterious satellites into orbits that shadow the US government’s most advanced spy satellites. US officials do not believe Russia has yet placed a nuclear weapon in orbit, but they now assess that the Russian military is operationalizing conventional anti-satellite weapons. Jamming is already happening. “Since Russia invaded Ukraine, there’s been some persistent satellite communications jamming, GPS jamming, and frequently these companies are the first to detect that, and so they inform us of that,” Whiting said.
He noted that the question of whether these companies need indemnification or other contractual mechanisms to manage their risk is now a national-level issue being examined by the Office of the Secretary of War for Space Policy. The next Apollo Insight wargame will focus on orbital maneuver warfare. Later exercises will simulate scenarios involving proliferated satellite constellations across different orbital regimes and missile warning and missile defense.
The series reflects a broader Pentagon recognition that 21st-century warfare will depend heavily on technologies and services that the government does not own. Why It Matters: A single nuclear detonation in orbit would not be an attack on one nation. It would be an attack on every nation that uses satellites—which is every nation with a modern economy.
GPS navigation, weather forecasting, financial transactions, and global communications all depend on space-based infrastructure. The year-long disruption window that officials describe would cascade through supply chains, emergency services, and military operations worldwide. Key takeaways from the exercise and Whiting’s remarks: - A nuclear detonation in low-Earth orbit could render the region unusable for up to a year, disabling thousands of satellites. - Space Command is running four classified Apollo Insight wargames this year, bringing together commercial firms and allied nations to model space warfare scenarios. - Russia is operationalizing conventional anti-satellite weapons and has launched satellites shadowing US spy assets, though no nuclear weapon is yet in orbit. - The Pentagon sees the commercial space industry as a critical asymmetric advantage and is deepening contractual ties to leverage private-sector speed and innovation.
What comes next is a rapid expansion of these exercises. Space Command will host three more Apollo Insight wargames before the end of the year. The immediate focus will be on maneuver warfare in orbit, followed by simulations of large satellite constellations and missile defense.
The unresolved indemnification question—how to protect commercial partners who take on military risk—will likely shape how quickly and deeply these partnerships can grow. The exercises themselves will produce classified findings that could influence future Space Force procurement and operational doctrine. Watch for new contract announcements and any shift in how the Pentagon talks about the vulnerability of its own space assets.
Key Takeaways
— - A single nuclear detonation in low-Earth orbit could render the region unusable for up to a year, disabling thousands of satellites critical for GPS, communications, and surveillance.
— - Space Command is running four classified Apollo Insight wargames this year, combining 60+ commercial companies and allied nations to model space warfare scenarios.
— - Russia is operationalizing conventional anti-satellite weapons and has launched satellites shadowing US spy assets, though no nuclear weapon is yet confirmed in orbit.
— - The Pentagon sees the commercial space industry as a critical asymmetric advantage but has not resolved how to indemnify companies that take on military risk.
Source: Ars Technica
