Rescue mission called off for NASA’s aging Swift space telescope

• The mission to save NASA’s Swift Observatory was called off on August 19.

• NASA’s Neil Gehrels Swift Observatory was launched in 2004.

• The LINK spacecraft was launched on July 3 to tug the satellite to a higher orbit and suffered irredeemable technical issues in space.

• Due to an altitude control issue, NASA and Katalyst Space announced that the LINK spacecraft will not capture or boost an Swift satellite to a higher altitude to extend its science mission as planned.

Key points on Swift Observatory:

• NASA’s Neil Gehrels Swift Observatory is a satellite that studies gamma-ray bursts, the most powerful explosions in the universe, and other cosmic objects and events. 

• It was launched in November 2004.

• Swift is NASA’s astrophysics multitool, capable of quickly observing a wide range of cosmic objects in visible, ultraviolet, X-ray, and gamma-ray light.

• Swift houses three multiwavelength telescopes, collecting data in visible, ultraviolet, X-ray, and gamma-ray light.

• It was designed for a two-year prime mission. 

• After 21 years of science operations, Swift’s low Earth orbit began to rapidly decay because of increased solar activity. 

• NASA used this opportunity to advance US spacecraft servicing technology, awarding a contract to Katalyst in September 2025 to mount a robotic servicing mission for Swift.

• The company had less than a year to design, build, test, and launch a spacecraft to meet, grab, and lift Swift. 

• In the meantime, teams at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and Pennsylvania State University’s Eberly College of Science in University Park made innovative operational changes to keep Swift at least 300 kilometers above Earth, where the boost mission has the best chance of success.

• While NASA could have allowed Swift to re-enter the atmosphere, the situation presented an opportunity to demonstrate a key capability for the future of space exploration. 

Why the boost mission failed?

All spacecraft in low Earth orbit experience slight drag from our planet’s atmosphere. If they don’t have propulsion systems to maintain their orbits, the drag gradually reduces their altitudes. A recent bout of solar storms magnified this effect on Swift, which began to sink faster than anticipated.