Britain to Launch 'Space Binman' Satellite to Remove Orbital Debris

Britain is preparing to launch a pioneering satellite designed to capture and remove defunct spacecraft from Earth's orbit. The UK Active Debris Removal Programme, set to take off in 2029 from the SaxaVord spaceport in Shetland, aims to address the growing problem of space junk.

A Robotic Claw in Orbit

The specialized spacecraft, developed by ClearSpace UK, is equipped with four articulated robotic arms capable of grappling tumbling satellites that have entered unsafe orbits. Once a defunct satellite is secured, the craft will gently guide it into Earth's atmosphere, where it will burn up. This mission is designed to prevent retired satellites from breaking apart into smaller, more hazardous pieces of debris.

The initial targets for this mission are two British satellites currently at risk of becoming space debris. ClearSpace UK has designed the craft to be refuelable, allowing it to be stationed in a safe orbit and reused for multiple missions over its operational lifespan, which is projected to be between five and twenty years.

Addressing the Space Junk Crisis

Experts estimate that there are hundreds of thousands of pieces of space debris, ranging from tiny fragments to entire satellites, traveling at speeds up to 17,000 miles per hour. This debris poses a significant threat to operational satellites, which are crucial for global communications, internet services, and navigation. The concern is the potential for a cascade effect, known as Kessler Syndrome, where collisions between debris pieces generate even more fragments, rendering certain orbits unusable.

Rob Atchinson, managing director of ClearSpace UK, emphasized the challenge of interacting with spacecraft not designed for external servicing. "So we've quite literally gone after the hardest problem; how do you control a spacecraft that was never meant to be controlled externally?" he stated. The satellite's independently articulating arms are designed to grapple complex shapes safely, minimizing the risk of creating additional debris.

The autonomous nature of the capture process is crucial due to the small margin for error and the time delay in communication between Earth and the satellite. The spacecraft will use onboard cameras to determine the target's orientation and autonomously execute the capture.

A Milestone for the UK Space Industry

The UK Space Agency has awarded a £61.3 million contract to ClearSpace UK for the design, build, launch, and operation of this new spacecraft. This mission represents the first space project to be managed and executed entirely within the UK, from conception to completion. The launch is scheduled from SaxaVord, the UK's first fully licensed spaceport.

This initiative aligns with the UK Space Strategy, which commits £7.8 billion in funding until 2030 and identifies in-orbit servicing and maintenance as a key focus area. Space Minister Baroness Liz Lloyd highlighted the importance of developing such capabilities for a sustainable satellite communications industry and positioning the UK as a provider of space services globally.

The project also includes a public competition to name the new satellite, with entries opening soon. Following this initial mission, ClearSpace UK plans to deploy additional satellites to service a wider range of orbits and debris.