NASA rescue – With Swift Observatory slipping faster than expected in low-Earth orbit, NASA is preparing a rescue mission that could launch later in June—built on a sub-year turnaround contract with Katalyst Space and a Pegasus XL air-launch plan by Northrop Grumman.
By the time NASA realized the Swift Observatory was falling faster than planned, the calendar had already become the enemy.
Swift has been orbiting Earth for more than two decades, watching the universe’s most violent events. But in recent years. the satellite began dropping unexpectedly—lower and lower—raising the risk that it could burn up in Earth’s atmosphere. NASA now says the path forward is a rescue mission later in June. one that would intercept the telescope with a commercial spacecraft and boost it to a higher altitude. extending its life.
The mission has a second objective built into it: prove a new kind of capability without having to replace the observatory. And it has a deadline built into the physics—without intervention. Katalyst Space says Swift’s odds of an uncontrolled reentry would be 50% by mid-2026 and 90% by the end of 2026.
Swift Observatory has been working since 2004. originally built to study gamma-ray bursts—catastrophic deaths of massive stars and among the most powerful explosions in the universe. While Swift has three multiwavelength telescopes designed to collect data in visible. ultraviolet. X-ray and gamma-ray light. its orbit is what now threatens the mission. The spacecraft operates in low-Earth orbit, the same general region where the International Space Station resides.
In that region, atmospheric drag steadily works against any spacecraft without propulsion to counter it. NASA expects objects there to decay toward lower altitudes over time. But it says Swift has been falling faster than anticipated because increased solar storms that began after fall 2024.
NASA’s plan starts with a choice: let it drop and burn up harmlessly, or try to reverse the decay. NASA is choosing the second option.
Instead of allowing Swift to fall back to Earth. NASA intends to launch a spacecraft to rendezvous with the telescope and raise its orbit over the course of several months. Mission teams are also keeping Swift at least 185 miles above Earth while the boost campaign is prepared. NASA said—because the boost mission’s best chance of success depends on timing and altitude.
If the mission succeeds, it would be a first for how spacecraft are handled in orbit. NASA says it would mark the first time a commercial robotic spacecraft captures a government satellite that, unlike the Hubble Space Telescope, was never meant to be serviced in space.
That brings the spotlight to the company building the capture and boost system and the compressed schedule behind it.
Katalyst Space, an aerospace company based in Flagstaff, Arizona, was awarded a $30 million contract in September 2025 to design the spacecraft meant to boost Swift’s orbit. With less than a year to help NASA mount the rescue, Katalyst developed the LINK robotic servicing spacecraft.
Swift has no docking ports or grappling fixtures for a robotic grab. So Katalyst built LINK with a custom robotic capture mechanism intended to attach to a feature on the satellite’s main structure. The goal is to reduce the risk to sensitive instruments by using a capture method tailored to the spacecraft’s layout. Katalyst said in a press release.
The timeline is tight not because the technology is routine, but because the orbit is running out of room. Katalyst’s own numbers reflect the urgency: a 50% chance of uncontrolled reentry by mid-2026 without intervention, rising to 90% by the end of 2026.
The next step is getting LINK into space—and doing it using a rocket and launch sequence NASA says is already in motion.
LINK will hitch a ride with a rocket manufactured by Northrop Grumman, a Virginia-based aerospace and defense company. The vehicle is the Pegasus XL, about 55 feet tall and classified as a small-lift rocket—described as the world’s first privately developed orbital launch vehicle.
Katalyst says LINK has already been securely encapsulated inside a payload fairing with the Pegasus XL rocket at NASA Wallops Flight Facility in Virginia. From there. the Pegasus XL is due to launch later in June from the Kwajalein Atoll in the Marshall Islands. in the central Pacific Ocean between Hawaii and the Philippines. according to NASA.
Instead of launching vertically from a traditional pad, Northrop Grumman plans an air-launch approach. The rocket will be carried by the company’s Stargazer L-1011 aircraft to about 40. 000 feet over the ocean. where Pegasus will be released and ignite its first-stage rocket motor. according to Northrop Grumman.
NASA says Pegasus was mated in mid-June to the Stargazer aircraft, which will take it from the Wallops facility to the Marshall Islands ahead of the launch.
The sequence is compressed and interlocked: solar activity pushes Swift lower after fall 2024. the satellite’s reentry risk rises toward mid-2026 and then end of 2026. and NASA’s window for a rescue that depends on a higher starting altitude—at least 185 miles above Earth—is measured in weeks. not years.
As LINK prepares for liftoff later in June, the mission’s success will hinge on whether the capture and boost can be executed in a way Swift was never designed to experience—and whether NASA’s rescue can arrive before orbital decay becomes irreversible.
NASA Swift Observatory low-Earth orbit satellite rescue mission Katalyst Space LINK Northrop Grumman Pegasus XL Kwajalein Atoll Stargazer L-1011 orbital decay