What does it take to get two powers that never talk to each other? Thousands of satellites in low orbit and the certainty that, sooner or later, one will collide with another. October 2025: China contacts NASA to coordinate an anti-collision maneuver. It's the first time.
It's not a summit, nor even a diplomatic agreement: it's a simple technical, direct, pragmatic communication. "We see a conjunction between our satellites. We advise you to stay put, we'll maneuver." A few lines that Alvin DrewNASA's director for space sustainability, called it "a cause for celebration." Because when space becomes too crowded, even the silence between Washington and Beijing becomes too risky.
When the roles are reversed
For years the dynamics had been clear: NASA sensed the China National Space Administration (CNSA) whenever an American satellite was in danger of crossing a Chinese orbit. Washington sent the data, suggested the trajectories, and Beijing executedA one-way protocol, based on technical necessity rather than diplomatic trust. Then came the October message. Short, concise, but clear: China had identified a possible collision between satellites and offered to manage the corrective maneuver.
Drew told it to the International Astronautical Congress in Sydney with a tone that mixed surprise and satisfaction:
“For the first time, the CNSA contacted us and said, ‘We see a junction, stay put, we’ll take care of the maneuver.’ It’s the first time this has happened.” A change of tone that speaks louder than many official statements.
Il Wolf Amendment of 2011 bars NASA from any direct bilateral collaboration with Chinese entities without Congressional and FBI approval. The rationale: national security, espionage risk, and technology transfer.
Yet, the exchange of technical information for orbital safety has never been blocked: it is too risky to let the satellites "talk" to each other only through silence.
Low Earth orbit has become a busy highway
The context explains why a technical message becomes news. Between 2019 and 2023, Starlink satellites have performed over 50.000 maneuvers of avoidance. Projections say that by 2028 they could reach one million every six months. This isn't hyperbole: every six months the number doubles, following an exponential curve that doesn't leave much room for error.
China is building mega-constellations Guowang e Thousand SailsThe United States continues to launch Starlink at a rapid pace. Low Earth orbit (LEO), the band between 160 and 2.000 kilometers above sea level, has become a congested environment where even a screw can cause catastrophic damage traveling at 28.000 km/h. It's a bit like driving on the highway without rearview mirrors: you can do it, but sooner or later someone will get hurt.
La Kessler syndrome, theorized in 1978 by NASA astrophysicist Donald Kessler, describes exactly this scenario: collisions that generate debris, debris that causes more collisions, to the point of making some orbits unusable for decades.
Orbital collisions, orbital pragmatism
The CNSA message suggests that Beijing has achieved a level of spatial situational awareness that can identify collisions and coordinate with other operators. A significant technical leap. China had indicated it as a priority in its white paper 2022 Space, which outlined the ambitions for the period 2021–2026. Now it seems that the capabilities are living up to the claims.
Michael Garrett, co-author of the study presented at the National Astronomy Meeting 2025 of the Royal Astronomical Society, emphasizes that "learning how our signals travel through space gives us valuable insights into how to protect the radio spectrum and design future radar systems." The methods developed to detect weak signals can also be used for orbital monitoring and planetary defense.
This isn't about mutual trust, at least not in the traditional sense. It's pure pragmatism: Better to coordinate today than collect debris tomorrow. When you've invested billions in hardware that runs at supersonic speeds above everyone's heads, the risk calculus changes. And perhaps, in an environment without traffic lights or bus lanes, even two powers that frown at each other can decide it's worth exchanging a message.
Drew concluded his speech with a consideration that sounds more realistic than optimistic: this technical cooperation could become the first step toward shared protocols, perhaps even joint missions. Or maybe not.
Meanwhile, for the first time, the phone rang on the other end. And someone answered.
