IRIA News

5 minute read

United States and United Kingdom successfully executed a first-of-its-kind, joint military operation in space, moving two satellites close together at an altitude of nearly 36,000 kilometres above the Earth. The coordinated satellite maneuver demonstrates alliance’s readiness to conduct dynamic and integrated space operations.

Between September 4 and 12, a U.S. Space Command repositioned one of its satellites in geostationary orbit to closely observe and assess the performance of the UK’s SKYNET 5A military communications satellite. The coordinated orbital operation demonstrated not only technological capability but also the growing depth of allied defense cooperation extending beyond Earth.

The maneuver took place in geostationary orbit, 35,786 kilometers (22,369 miles) above the Earth’s equator, where satellites remain fixed over one location. This orbit is essential for communications systems because it allows ground-based antennas to maintain a permanent connection with a single point in the sky.

Conducting such operations in this environment requires exacting precision. Both satellites involved were traveling at approximately 6,835 miles per hour, or nearly two miles per second, raising the stakes of any miscalculation.

The 🇺🇸 & UK Space Command have conducted the 1st US-UK operation in space, under Multinational Force-Operation Olympic Defender

In a 1st of its kind mission, @US_SpaceCom‘s satellite manoeuvred near to the UK SKYNET 5A comms satellite – a complex & meticulously planned operation pic.twitter.com/pb5s9jWuRD

— UK Space Command (@UKSpaceCmd) September 18, 2025

The procedure, known as a “Rendezvous Proximity Operation,” carries inherent risks because even a small error could result in a collision or loss of both satellites. Yet officials from both commands emphasized that the mission was executed safely and with a high degree of professionalism.

Strengthening collective defense in space

The initiative was carried out under the umbrella of Multinational Force, Operation Olympic Defender, a U.S.-led coalition that includes Australia, Canada, France, Germany, New Zealand, and the United Kingdom. The coalition is tasked with advancing combined space operations to safeguard shared national and military interests against a backdrop of increasing competition in orbit.

Major General Paul Tedman, Commander of the UK Space Command, described the effort as a breakthrough in operational capability. “This was a first-of-its-kind operation, delivered safely and responsibly by talented space specialists on both sides of the Atlantic,” he said. “The like-minded nations of Multinational Force Operation Olympic Defender are now assertively safeguarding our shared interest in space, through advanced combined space operations.”

The demonstration comes amid growing concerns over the weaponization of space by rival powers, particularly Russia and China. Both countries have been accelerating their military space programs, testing anti-satellite weapons, and experimenting with their own proximity operations. Western officials see such moves as destabilizing, increasing the risk of miscalculation and debris creation in an already crowded orbital environment.

Lieutenant General Douglas Schiess, Commander of U.S. Space Forces Space and the Combined Joint Force Component Command, said the coordinated maneuver underscored the strength of allied cooperation. “This coordinated maneuver between two allies validated the interoperability that’s foundational to our collective defense,” he stated. “The confirmation of the MNF’s combined military might on-orbit delivers a credible deterrent in the increasingly contested space domain.”

Meeting on Earth AND in Space — USA 271 Drops by SKYNET-5A

USA 271 (SSC.41745), a highly maneuverable Geosynchronous Space Situational Awareness U.S. satellite (GSSAP), halted its westward drift near a U.K. military communications satellite, SKYNET-5A (SSC.30794), at 95.3°E from… pic.twitter.com/1mN6YDV4P4

— COMSPOC_OPS (@COMSPOC_OPS) September 19, 2025

General Stephen Whiting, Commander of U.S. Space Command, reinforced this message, noting that space warfare capabilities must be approached with both readiness and responsibility.

“The success of this multidomain operation represents the warfighting advantage realized by employing our capabilities and expertise as one unified team,” he said. “Though our opponents may attempt to replicate the value of such cooperation, our partnerships are uniquely defined by not only the mutual goal of deterring aggression but a shared pledge to fight and win shoulder to shoulder, if necessary.”

US-UK space cooperation

The UK’s SKYNET program has been central to British military communications since the late 1960s, when SKYNET 1A satellite was launched. SKYNET 5A, the satellite involved in this month’s maneuver, is one of several in orbit that provide secure communications to UK armed forces and allied partners.

The U.S. satellite involved in the mission has not been publicly identified, though the Pentagon operates specialized spacecraft under the Geosynchronous Space Situational Awareness Program that are capable of maneuvering in geostationary orbit to inspect or monitor other satellites.

Officials said the maneuver was intended not only to verify the operational status of SKYNET 5A but also to demonstrate the ability of allied space commands to carry out complex orbital maneuvers responsibly.
The ability to reposition satellites and observe other spacecraft is increasingly seen as a core element of deterrence in space, ensuring that potential adversaries know their actions can be monitored and, if necessary, countered.

Beyond the technical significance, the operation also carried symbolic weight. It was conducted just days before the United Kingdom’s annual Battle of Britain Day, which commemorates the defense of British skies in 1940.

To mark the occasion, a memorial plaque was presented at the U.S. Air Force Memorial in Arlington, Virginia, honoring ten American citizens who flew with the Royal Air Force during that historic campaign. The juxtaposition of historic aerial defense with modern orbital defense highlighted the evolution of the U.S.-UK alliance from air to space.

The operation is seen as a demonstration of credibility for Operation Olympic Defender, which aims to establish shared norms and tactics for space defense among trusted partners. Analysts suggest that the successful completion of the maneuver will likely encourage more joint operations and could set a precedent for future collaborative orbital missions.