Space debris: Are we on track for true sustainability? (op-ed)

Earth's low-Earth orbit faces growing congestion as active satellites are projected to jump from roughly 16,000 to nearly 60,000 by 2035, according to Novaspace and European Space Agency figures cited by Space Data Association chairman David Zamora. This rapid expansion threatens a critical infrastructure layer supporting modern life. Alongside rising satellite traffic, the orbital environment holds more than 1.2 million pieces of debris larger than one centimeter, each capable of damaging spacecraft.

Mitigating this risk requires minimizing new debris creation across all mission phases and shortening dead satellite deorbit timelines from 25 years down to five years. Protecting active spacecraft also relies on Space Situational Awareness systems to track objects and Space Traffic Coordination networks to prevent collisions. Global stakeholders are responding with targeted regulatory and technological initiatives.

The European Space Agency launched a Zero Debris strategy aiming for a debris-neutral environment by 2030, while the U.K. Space Agency pursues active removal programs and sustainability standards. In the United States, NASA outlined a dedicated strategy, and the Senate is considering the Orbital Sustainability Act to fund debris remediation.

While these measures point toward safer operations, whether true sustainability becomes a core industry principle or remains an afterthought over the coming