Inside China’s Plan to Fight in Space

Beijing is building dual-use orbital weapons designed to seize satellites and strike Earth, and the arms race is already underway.

In January 2022, a Chinese satellite called Shijian-21 quietly approached a defunct Beidou navigation satellite, latched onto it, and dragged it several hundred kilometers above the geostationary belt to a “graveyard orbit.” Beijing called it debris mitigation. To Pentagon planners, it was something else: a live demonstration that China can grab another country’s satellite and move it wherever it wants.

That maneuver, detailed in a Financial Times investigation into China’s space-warfare program, captures the strategic puzzle now confronting Washington and its allies. The hardware Beijing is putting in orbit is genuinely dual-use: a robotic arm that can service a friendly satellite can just as easily disable a hostile one. A maneuverable inspector spacecraft is indistinguishable from a co-orbital weapon until the moment it isn’t. And unlike nuclear weapons or chemical stockpiles, there is no inspection regime, no treaty body, and no agreed definition of what counts as an act of war 400 kilometers above the Earth.

What China has actually tested

The FT’s mapping of Chinese capabilities describes three overlapping categories of system, each at a different level of maturity.

The first is satellite-grappling and proximity-operations technology. Shijian-21 is the headline case, but it is part of a broader family of “inspector” satellites that can rendezvous with other objects in orbit, photograph them, and physically interact with them. The civilian rationale is satellite servicing and debris removal. The military application is obvious: a country that can tow a dead satellite can tow a live one, or simply break it.

The second is co-orbital interception, weapons that share an orbit with a target and destroy it through collision, explosion, or directed energy. China’s 2007 anti-satellite test, which shattered a defunct weather satellite and scattered thousands of pieces of debris across low Earth orbit, was the crude version. The newer systems are quieter and more precise, designed to disable rather than pulverize, partly because Beijing now has its own large constellation to protect from debris.

The third, and most provocative, is the category of orbital systems capable of striking targets on Earth. The 2021 fractional orbital bombardment test, in which a Chinese hypersonic glide vehicle circled most of the globe before descending toward its target, prompted General Mark Milley to compare it to a “Sputnik moment.” Such a weapon flies under existing missile-warning radars, which are oriented toward polar trajectories from Russia, and collapses the decision time available to a US president.

Why arms control doesn’t reach orbit

The 1967 Outer Space Treaty bans weapons of mass destruction in orbit and reserves the Moon for peaceful use. It says almost nothing about conventional weapons, kinetic interceptors, or robotic arms, the technologies that actually matter today.

Successive efforts to update the framework have foundered on a basic asymmetry. Russia and China have promoted a draft treaty banning the “placement of weapons” in space, language Washington rejects because it does not cover ground-launched anti-satellite missiles, the area where Beijing and Moscow have an early lead. The US, in turn, has pushed voluntary norms of behavior, such as a moratorium on debris-creating ASAT tests, which China has declined to join.

The deeper problem is verification. A satellite’s purpose is largely a function of its software and its operator’s intent, neither of which is visible from the ground. An inspector spacecraft built by a state-owned Chinese company for “on-orbit servicing” is, in engineering terms, the same vehicle as a weapon. There is no centrifuge cascade to count, no missile silo to photograph. This is why analysts who follow the domain tend to argue that deterrence in space will rest on resilience and retaliation, not on treaties.

The American and allied response

The US Space Force, established in 2019 and still the smallest service branch, has spent the past two years reorienting around exactly this problem. Its budget request for fiscal 2025 prioritizes “space domain awareness,” a euphemism for tracking what Chinese and Russian satellites are doing, and a new generation of smaller, more numerous, more maneuverable American satellites that are harder to target than the exquisite billion-dollar platforms of the previous era.

Proliferated constellations are the other half of the answer. The Pentagon is buying capacity from SpaceX’s Starlink and its military variant Starshield precisely because a swarm of cheap satellites is more survivable than a handful of expensive ones. If Beijing can disable three or four nodes, the network reroutes. If it tries to disable three or four hundred, it has started a war and exhausted its inventory in the process.

Allies are being pulled in unevenly. The UK, Japan, and Australia have each stood up small space commands and signed information-sharing agreements with US Space Command. France has tested its own inspector satellite. But the bulk of allied space spending remains a rounding error against US and Chinese budgets, and European governments are preoccupied with Ukraine, the Middle East, and their own defense-industrial shortfalls. The familiar question, whether Western deterrence still cohered when tested, applies in orbit too, and the honest answer is that it has not been tested.

The closing logic

What makes the orbital arms race distinctive is that the first move in a serious conflict may not look like a move at all. A satellite drifts slightly off station. A communications link degrades. A reconnaissance pass returns no imagery. By the time anyone is sure an attack has occurred, the war on Earth is already underway, fought by forces that have lost their eyes and their GPS.

That is the scenario US planners are now designing against, and the one Chinese planners appear to be designing toward. The treaty era of arms control assumed adversaries who wanted to be seen complying. The orbital era assumes adversaries who want to be seen doing nothing at all.