Space & Aerospace — 2026-06-27

China Accounts for 86 Percent of Rocket Bodies Abandoned in LEO as Three Explode Creating Decades of Debris

BLUFAbsent enforceable deorbit mandates, China's accelerating rocket body abandonment locks in decades of compounding collision risk across military and commercial orbital bands.

A LeoLabs study reported by Breaking Defense on June 25 found China accounts for 86 percent of rocket bodies abandoned in low Earth orbit, having left 51 spent rocket bodies above 650 km from January 2021 to January 2025 compared to four by the US and one by Russia during the same period 1. China's abandoned rocket body mass tripled from 98,000 to 305,000 kilograms over that window, representing 98 percent of the global increase in abandoned mass 1. Three Chinese rocket bodies, including two CZ-6A stages and the Zhuque-2 upper stage, have exploded over the past four years, generating debris that LeoLabs analyst Darren McKnight told Breaking Defense "will linger for decades to centuries, potentially colliding with other space objects" 2. The study found the abandonment pattern puts both military and commercial satellites in LEO at greater risk of debris-creating collisions 13.

Analysis
Three Chinese fragmentation events over four years have moved rocket body abandonment from a compliance concern to an active operational hazard, according to a LeoLabs study reported exclusively by Breaking Defense. Debris clouds from those explosions populate the same orbital bands as reconnaissance, communications, and remote sensing platforms, compounding conjunction risk from sub-trackable fragments no satellite can maneuver around. With no policy mechanism compelling deorbit adoption, the abandonment rate compounds exposure with each launch cycle and the hazard grows regardless of near-term behavioral change. Soviet-era hardware, Russian ASAT tests, and commercial deorbit failures may represent a larger cumulative conjunction hazard than the Chinese increment within this study window.

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