MARSHALL ISLANDS — NASA plans to launch a robotic spacecraft named LINK on July 1, 2026, to boost the orbital path of the Neil Gehrels Swift Observatory. The launch from the Marshall Islands aims to prevent the aging observatory from orbital decay, as it lacks onboard thrusters.

NASA prediction models indicate a risk of the Swift Observatory's orbit dropping below 185 miles by October 2026. This potential orbital decay is due to atmospheric drag, which is intensified by increased solar activity that heats Earth's atmosphere. Intense solar activity occurred in 2024 during the solar maximum phase of the sun's 11-year cycle.

Katalyst Space Technologies, an Arizona-based firm, received a $30 million contract from NASA in September 2025 to construct the LINK spacecraft. Northrop Grumman is supplying the Stargazer airplane and a Pegasus XL rocket for the mission. The Stargazer is scheduled to take off at 6:23 a.m. and deploy the Pegasus XL rocket at an altitude of 40,000 feet.

The LINK spacecraft measures 6 feet in length and weighs 880 pounds. It is designed to capture the Swift Observatory and gradually raise its orbit over several months. NASA launched the Swift Observatory in 2004 with an original mission duration of two years.

The Neil Gehrels Swift Observatory has been in Earth's orbit for two decades, serving to study gamma-ray bursts. These bursts are phenomena caused by events such as the birth of black holes and collisions between ultra-dense stars. Data collected by the observatory has aided scientists in studying over 1,400 gamma-ray bursts and various other high-energy events, including detecting a gamma-ray burst from an exploding star approximately 13 billion light-years distant.

Shawn Domagal-Goldman, Director of NASA's astrophysics division, described the observatory's capabilities, stating, "It is a swift observatory that can quickly pivot across the night sky to find things that go boom in the night." He added, "So we decided, yeah, we want to go save this one this time because of how special it is."

John Nousek, a professor of astronomy and astrophysics at Penn State University, noted the potential benefits of a successful mission. "In addition to the scientific return, the new ability to retrieve a satellite (which was never planned to be serviced in orbit) will give NASA or other customers the capability to reuse, extend or add functions to existing spacecraft at a small fraction of the cost of a new mission," Nousek said. He also noted, "If the LINK mission succeeds it will restore a $300 million (in 2004 dollars) satellite to full capability for only $30 million (in 2026 dollars)."

Kieran Wilson, Vice president of technology at Katalyst Space Technologies, discussed the evolving perspective on satellite life cycles. "For years and years, folks have thought about space as something where you build a satellite, you launch a satellite, it does its mission, and at the end of the mission, it gets disposed of, either it re-enters or it goes to a graveyard orbit at some point," Wilson said. He further stated, "You should be able to refuel, reposition, repurpose, repair, and even upgrade satellites, even if they were never prepared for it."

Why It Matters

The planned July 2026 mission to boost the Neil Gehrels Swift Observatory's orbit represents an effort to extend the operational life of a scientific asset that has already exceeded its initial two-year mission by two decades. Satellite missions traditionally conclude with either re-entry or movement to a graveyard orbit. This initiative aims to introduce the capability for in-orbit servicing, potentially setting a precedent for recovering and prolonging the utility of existing satellites that were not designed for such interventions. The mission addresses the challenge of orbital decay, exacerbated by increased solar activity, which poses a threat to low-Earth orbit satellites like Swift.