Space, Technology

How NASA Will Lift Swift Observatory 40,000 Feet Via Aircraft

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June 22, 2026 by Ivy Delaney

Northrop Grumman’s Stargazer aircraft departed NASA’s Wallops Flight Facility in Virginia on June 18, carrying a unique payload designed to extend the life of a vital space observatory. The modified L-1011 aircraft is en route to Kwajalein Atoll, part of the Republic of the Marshall Islands, transporting a Pegasus XL rocket and the LINK spacecraft built by Katalyst Space. NASA contracted Katalyst to rapidly address unexpectedly accelerated orbital decay of the Neil Gehrels Swift Observatory, a consequence of recent solar activity that caused the satellite to sink faster than anticipated. The mission will effectively “boost” Swift back to a stable orbit via an airborne launch later this month, demonstrating a novel approach to orbital maintenance.

Stargazer L-1011 Aircraft Deploys Pegasus XL with LINK

NASA contracted Katalyst Space to develop LINK, a robotic servicing spacecraft, to address the orbital decline. Katalyst selected Northrop Grumman’s Pegasus XL launch vehicle, determining it was the optimal solution given the urgent timeline and specific orbital requirements. Katalyst determined the Pegasus XL was the best means of reaching Swift, based on orbital and programmatic needs, highlighting the responsiveness required in modern space operations. Following arrival at Kwajalein Atoll, Stargazer will carry Pegasus and LINK to an altitude of approximately 40,000 feet before releasing the Pegasus XL, initiating a ten-minute sequence to deliver LINK into orbit. This operation underscores a growing trend toward in-space repair and maintenance, extending the lifespan of valuable scientific assets like the Swift Observatory and reducing the reliance on costly replacement missions.

Katalyst’s LINK Mission Counteracts Swift Observatory Orbital Decay

The ambitious Swift Boost mission relies on an unconventional launch profile, departing from traditional ground-based methods to address the decaying orbit of NASA’s Neil Gehrels Swift Observatory. This geographically dispersed operation underscores the logistical complexity of on-orbit servicing, requiring international coordination and specialized infrastructure to support the airborne launch platform. This airborne deployment method circumvents the need for dedicated launch facilities and offers greater flexibility in targeting orbital planes, a critical advantage given the time-sensitive nature of the mission to restore Swift’s operational altitude and ensure continued observations of gamma-ray bursts and other transient astronomical events. The success of LINK will not only extend the life of the Swift Observatory but also demonstrate the viability of robotic servicing as a crucial component of long-term space sustainability.

Spacecraft in low Earth orbit experience drag caused by our planet’s atmosphere, which gradually reduces their altitude if they do not have propulsion systems to counteract the effect.

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Ivy Delaney

Ivy Delaney has been working with neural networks and machine learning since the mid-nineties, back when a couple of hidden layers and a long afternoon of training counted as ambitious. She has watched the field go from academic curiosity to the thing quietly running underneath everything, and she brings that long view to quantum computing. For Quantum Zeitgeist she covers the ground where the two fields meet. That means quantum machine learning and the variational algorithms it leans on, and it also means the less glamorous but more interesting story of classical machine learning already doing real work inside quantum machines, decoding error-correcting codes, calibrating noisy hardware and learning the error models that simulators depend on. She writes about the hardware those algorithms have to run on too, and about the post-quantum cryptography scramble that the same hardware has set off. Her stories typically start with the paper, whether that is peer-reviewed work, conference proceedings or an arXiv preprint, with the source linked so you can hold a claim up against the research it came from. She is unimpressed by benchmarks that will not say what they beat, and by demonstrations that only work in the press release.

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