LINK Spacecraft Spins Out of Control During NASA Rescue Mission

LINK Spacecraft Spins Out of Control During NASA Rescue Mission

The mission was designed to rescue the Neil Gehrels Swift Observatory, which has been descending faster than anticipated due to increased solar activity during the Sun’s solar maximum phase in 2024. Launched originally in November 2004, the Swift telescope sits roughly 360 kilometers above Earth and faces a high probability of crashing back down and burning up in the atmosphere unless an orbital intervention successfully takes place.

Hardware Failures and Orbital Tumble

During its commissioning phase, LINK successfully cleared several preliminary milestones, including deploying its solar-power arrays and test firing its xenon-gas thrusters. However, preliminary investigations revealed that two of LINK’s three reaction wheels—which use electric motors to control orientation and stabilize rotation—are currently inoperable. Additionally, operators noted a loss of functionality within the spacecraft’s cold gas thruster system.

These hardware failures triggered a multi-axis spin that caused sporadic communications with ground teams. Despite the tumble, Katalyst confirmed that LINK’s other major subsystems—including its electric propulsion, robotics, RPO sensing, power, and S-band and L-band communications—remain fully functional and the spacecraft is power positive.

Recovery Efforts and Next Steps

Ground controllers are still in communication with LINK and are actively working to stop the orbital spin over the coming days. According to NASA, the team is utilizing the spacecraft’s gimbaled electric propulsion thrusters to reduce body rates and stabilize the vehicle. Initial corrective maneuvers have already begun showing their intended effect.

If the stabilization efforts succeed, Katalyst plans to adjust the spacecraft’s guidance, navigation, and control software to accommodate the new configuration and work around the failed hardware. Once the spacecraft’s health and safety are fully evaluated, Katalyst and NASA will review revised plans to approach, capture, and boost Swift to a higher orbital altitude.

Stakes for Astrophysical Research

The mission represents a critical test for whether robotic spacecraft can service and repair satellites that were never originally designed to be captured in orbit. Swift serves as an indispensable resource for astrophysical research, rapidly detecting high-energy cosmic events such as gamma-ray bursts and supernovae.

With scientific observations currently on hold, officials remain hopeful that the mission can still succeed. The mission remains active and we continue to believe that with these changes, LINK has a viable path to rendezvous with Swift, Engadget stated.