NASA Mission set to rescue aging Swift Telescope from falling orbit

NASA is preparing to launch a unique rescue mission later this month to save one of its long-serving space telescopes from a rapidly deteriorating orbit.

The agency’s Swift Boost mission is scheduled for launch on June 27 and will attempt to rendezvous with the Neil Gehrels Swift Observatory, an orbiting telescope that has been gradually losing altitude faster than expected.

The mission is designed to extend the observatory’s operational life by lifting it into a higher orbit, potentially allowing it to continue scientific observations for several more years.

NASA Races to Save Swift Observatory

NASA partnered with Arizona-based aerospace company Katalyst Space to develop a robotic spacecraft known as LINK, which will dock with the observatory and tow it to a safer altitude.

Engineers recently completed major preparations for the mission. On June 9, LINK was installed atop a Northrop Grumman Pegasus XL rocket at NASA’s Wallops Flight Facility in Virginia. The rocket was later attached to Northrop Grumman’s Stargazer aircraft before departing for Kwajalein Atoll in the South Pacific on June 18.

During launch, Stargazer will carry the Pegasus XL rocket to an altitude of approximately 40,000 feet before releasing it. After a brief free-fall, the rocket’s engines will ignite, delivering LINK into orbit within roughly 10 minutes.

Increased Solar Activity Accelerated Orbital Decay

While all satellites gradually lose altitude over time, NASA says Swift’s orbit has been decaying more quickly than anticipated.

The agency attributes the accelerated decline to increased atmospheric drag caused by heightened solar activity. As the Sun becomes more active, Earth's upper atmosphere expands, creating additional resistance for satellites in low-Earth orbit.

“Given how quickly Swift's orbit is decaying, we are in a race against the clock, but by leveraging commercial technologies that are already in development, we are meeting this challenge head-on,” NASA official Shawn Domagal-Goldman said when the partnership with Katalyst was first announced.

Telescope Has Played Key Role Since 2004

Launched in 2004, the Neil Gehrels Swift Observatory was originally designed to detect and study gamma-ray bursts, some of the most powerful explosions in the universe.

Over time, however, the spacecraft evolved into a versatile multi-wavelength observatory used by astronomers around the world.

NASA describes Swift as a scientific “dispatcher” capable of rapidly identifying unexpected cosmic events and alerting other observatories to investigate them in greater detail.

Among its notable achievements was identifying the location of an X-ray source that was later determined, through follow-up observations from other instruments including the James Webb Space Telescope, to be a supernova that exploded roughly 13 billion years ago.

If the Swift Boost mission succeeds, NASA will demonstrate a new approach to extending the lifespan of aging spacecraft, potentially paving the way for future orbital servicing missions across the space industry.