NASA’s Swift telescope could crash to Earth as $30 million rescue spacecraft spins out of control

An ambitious mission to save NASA’s aging Swift space telescope has encountered an unexpected problem: the spacecraft sent to rescue it is now struggling with a malfunction of its own.

Katalyst Space Technologies said Tuesday that its Link satellite developed thruster problems over the weekend and entered an uncontrolled spin, disrupting communications with the spacecraft just weeks after it reached orbit.

The setback threatens an unusually urgent $30 million NASA mission designed to prevent Swift from falling back to Earth. The nearly 22-year-old observatory has been losing altitude faster than anticipated and could re-enter the atmosphere as soon as this fall if its orbit is not raised.


Despite the latest complication, neither NASA nor Katalyst is ready to abandon the rescue.

Katalyst said teams are working around the clock to stabilise Link and restore its ability to proceed toward Swift. The company stressed that the spacecraft’s other major systems appear to be functioning normally, leaving open the possibility that the mission can still be recovered.

“The mission remains active and we continue to believe that with these changes, Link has a viable path to rendezvous with Swift,” Katalyst said in a statement.

What went wrong with the Link satellite?

Link launched into orbit around three weeks before the problem emerged, carrying a three-armed robotic system intended to capture Swift and help move the telescope into a safer, higher orbit.

The mission was already technically challenging. Link needs to approach an observatory that was never designed to be serviced in space, securely capture it and then provide the boost necessary to extend its operational life.

The thruster malfunction has added another layer of difficulty.

Thrusters allow spacecraft to control their orientation and perform manoeuvres in orbit. Katalyst said problems with Link’s thrusters caused the satellite to begin spinning uncontrollably, which in turn interfered with communications.

Regaining stable control is therefore critical before the spacecraft can attempt its planned rendezvous with Swift.

Katalyst has not declared the spacecraft lost, and the apparent health of Link’s other important subsystems provides some encouragement as engineers search for a solution.

Why does NASA need to rescue Swift so quickly?

Swift was launched in 2004 and has spent more than two decades observing some of the most energetic and violent events in the universe.

But its orbit has gradually deteriorated.

Recent solar activity has accelerated that decline beyond earlier expectations, creating an unusually tight deadline for NASA and Katalyst.

Increased solar activity can cause Earth’s upper atmosphere to expand, increasing the drag experienced by satellites in low-Earth orbit. Over time, that additional resistance can pull spacecraft toward the planet more rapidly.

For Swift, the problem has become serious enough that intervention is needed as soon as possible.

Without a successful orbital boost, the telescope is expected to re-enter Earth’s atmosphere this fall.

The urgency prompted NASA to assemble the rescue effort in less than a year — an unusually compressed timeline for a space mission of this complexity.

How is Katalyst supposed to save NASA’s Swift telescope?

The plan calls for Link to rendezvous with Swift and use its robotic hardware to capture the observatory.

Once the two spacecraft are connected, Link would raise Swift into a higher orbit, buying the telescope more time to continue its scientific work.

NASA is paying Katalyst Space Technologies $30 million for the mission.

Unlike spacecraft designed for servicing or docking, Swift was not originally built with this type of rescue operation in mind. That makes the mission particularly ambitious, requiring Link to interact with an aging telescope already orbiting Earth.

If successful, the operation would not merely prevent an early re-entry. It would allow NASA to continue using an observatory that has spent decades producing valuable astronomical data.

What does NASA’s Swift telescope actually do?

Swift was designed primarily to hunt for gamma-ray bursts — extraordinarily powerful flashes of high-energy radiation associated with some of the universe’s most dramatic events.

These bursts can occur when massive stars collapse and explode, and some are associated with the formation of black holes. Other violent cosmic events can also generate powerful gamma-ray signals.

Swift is able to detect these sudden explosions and rapidly turn its instruments toward them, allowing scientists to investigate events that can appear with little warning and fade quickly.

Its observations have helped astronomers study gamma-ray bursts, stellar explosions and other extreme phenomena across the universe.

The telescope’s scientific observations have been put on hold while efforts focus on its orbital predicament.

That makes the outcome of the Link mission important not only for preserving a spacecraft, but also for determining whether an established astronomical observatory can return to active research.

Can the NASA Swift rescue mission still succeed?

For now, Katalyst and NASA are proceeding on the assumption that the mission remains salvageable.

The immediate challenge is restoring sufficient control over Link following the thruster problem and uncontrolled spin. Reliable communication and spacecraft orientation will be essential before any attempt to approach Swift can proceed.

Katalyst’s assessment that Link’s other major subsystems remain healthy offers a potential route forward, although the company still faces the challenge of resolving the thruster issue with Swift’s re-entry deadline approaching.

There is little room for a lengthy delay.

Swift is continuing to lose altitude, and the telescope needs to be moved higher before atmospheric drag makes its descent irreversible.

The unusual situation has effectively created a rescue mission within a rescue mission: engineers must first save Link before Link can save Swift.

If they succeed, the robotic spacecraft could give one of NASA’s veteran space telescopes a new lease on life. If they cannot, Swift’s more than two-decade journey studying some of the universe’s biggest explosions could come to an end in Earth’s atmosphere later this year.