On July 28, NASA and Katalyst Space disclosed that the LINK spacecraft, launched July 3 to rendezvous with and reboost the Neil Gehrels Swift Observatory, has lost attitude control. Two of three reaction wheels have failed, and one thruster system is malfunctioning, causing the spacecraft to spin and experience sporadic communications. Flight controllers are now using a backup thruster set to slow the spin, reporting "the intended effect" from initial burns.
This is the first time NASA has contracted a private company to lift one of its space telescopes to a higher orbit. Swift, launched in 2004, needs a boost to continue observing gamma-ray bursts and other transient events. Katalyst's LINK was built on an accelerated timeline to meet the window for raising Swift before it decays further. Principal investigator Kieran Wilson acknowledged pre-launch that "all this is challenging and risky," noting that many spacecraft with longer development cycles and more funding have failed for mundane reasons.
Katalyst raised a $12 million round in June from Fortitude Ventures and Geodesic Capital to support this mission. The company has also secured U.S. military funding interested in satellite servicing and surveillance capabilities. The current failure puts both the commercial and military value proposition under scrutiny.
For startups and operators in the in-space services space, this incident offers several hard lessons. First, reaction wheel redundancy is critical. With only three wheels, a single failure reduces capability; two failures mean loss of attitude control. Designers should consider four-wheel configurations or alternative attitude control systems like control moment gyros. Second, thruster system robustness must be tested under realistic conditions. The fact that one thruster system failed suggests either a manufacturing defect or a design flaw that ground testing missed.
Third, the compressed development timeline—while necessary for mission urgency—introduced risk that may have been avoidable with more time. Katalyst's team built the spacecraft "incredibly quickly," but speed cannot substitute for rigorous testing of critical subsystems. Founders should weigh the trade-off between meeting a launch window and ensuring system reliability. In this case, the window for reboosting Swift may close if the spacecraft cannot be stabilized soon.
Fourth, the mission's funding structure—$12M from VCs plus military contracts—reflects a growing trend of blended finance for space infrastructure. However, investors should demand clear risk mitigation plans for attitude control and propulsion. The military's interest in dynamic satellite servicing means that failure modes like this could affect future contract awards.
Finally, the incident underscores the difficulty of orbital rendezvous and servicing. Even after stabilization, LINK must still navigate to Swift and perform the reboost maneuver. If the thruster issue is not fully resolved, the mission may be aborted. NASA will decide on continuation after stabilization attempts conclude.
For the broader industry, this is a reminder that in-space services remain a high-risk, high-reward frontier. Companies like Astroscale, ClearSpace, and others pursuing debris removal and satellite life extension face similar technical challenges. The Katalyst failure will likely prompt investors to scrutinize attitude control and propulsion architectures more closely.
Source: TechCrunch.