A Narrow Escape in Space: Starlink and Chinese Satellite Collision Averted
A potentially catastrophic collision in low Earth orbit was narrowly avoided last week when a newly deployed Chinese satellite came alarmingly close—within a few hundred meters—to one of the approximately 9,000 Starlink satellites currently traversing this region. SpaceX has attributed the incident to the failure of the satellite operator to share crucial location data.
The Incident Explained
Michael Nicolls, Vice President of Starlink Engineering, highlighted the significance of sharing ephemeris data among satellite operators. He stated, “When satellite operators do not share ephemeris for their satellites, dangerously close approaches can occur in space.” The recent event followed the deployment of nine satellites from the Jiuquan Satellite Launch Center in Northwestern China. Nicolls noted that, to the best of their knowledge, no prior coordination with existing satellites in the area was executed, which led to a close encounter of just 200 meters between one of the newly deployed satellites and STARLINK-6079 at an altitude of 560 km.
Starlink’s Collision Avoidance System
Starlink satellites are equipped with an automatic collision avoidance system capable of adjusting their trajectories to avert potential collisions. However, the effectiveness of this system hinges on the awareness of surrounding objects. In the first half of 2025 alone, Starlink spacecraft executed over 144,000 avoidance maneuvers. This statistic underscores the growing urgency for cooperative data sharing in a densely populated orbital environment.
Responses from CAS Space
In response to the incident, CAS Space, the commercial space launch company based in Guangzhou, attempted to absolve itself of responsibility. They asserted that the close call “occurred nearly 48 hours after payload separation, by which time the launch mission had long concluded.” This highlights the complexities involved in space operations where multiple stakeholders operate in the same orbital vicinity.
The Growing Challenge of Space Traffic
According to data compiled by Space, over 24,000 objects—including satellites and debris—are currently being monitored in low Earth orbit. This figure denotes a staggering 76% increase since 2019. Looking ahead, projections suggest that by the end of this decade, we may see as many as 70,000 satellites populating this critical zone, primarily driven by private and governmental projects focused on providing global internet services.
As the number of objects in orbit continues to multiply, the importance of collaboration, communication, and adherence to best practices among satellite operators becomes paramount for the safety and sustainability of space activities.
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