University of Manchester Researchers Launch Predictive Tool to Prevent Satellite Collisions in Crowded Orbits

Researchers at the University of Manchester create a modeling tool to predict and prevent satellite collisions in crowded orbits. Read more here.

By: AXL Media

Published: Feb 21, 2026, 5:26 AM EST

Source: Information for this report was sourced from the BBC - https://www.bbc.com/news/articles/cwyg1ly4456o

Bridging the Gap Between Performance and Safety

As Earth's orbits become increasingly congested, a team at the University of Manchester, led by Dr. Ciara McGrath and PhD researcher John Mackintosh, has introduced a system designed to preemptively identify collision risks. Traditionally, satellite mission planning and orbital safety analysis have been treated as separate disciplines. This new tool creates a unified framework that links a satellite's functional needs, such as high-resolution imaging, directly with the physical risks associated with its intended altitude and dimensions.

The Physics of Satellite Size and Orbital Risk

The research highlights a critical trade-off in aerospace design: the relationship between altitude and vulnerability. The study found that while higher orbits require fewer satellites to achieve global coverage, those individual units carry a significantly higher collision risk because they must be larger to maintain performance. Conversely, lower orbits may require more units, but their smaller size can alter the statistical probability of a strike. By inputting these variables into the Manchester model, designers can visualize the "danger zones" of a mission before a single piece of hardware is launched.

Solving the "Space Sustainability Paradox"

The project addresses what lead author John Mackintosh describes as the "space sustainability paradox." This refers to the irony of using satellites to monitor Earth's environmental goals, such as the UN’s Sustainable Development Goals (SDGs), while simultaneously creating an unsustainable environment in space through debris. As satellites provide vital data on disaster response, ecosystems, and urban development, the Manchester tool ensures that the quest for Earth-based sustainability does not result in the permanent loss of usable orbital pathways for future generations.