NASA's Swift Space Telescope Nears Reentry Following Failed Commercial Rescue Mission

NASA’s Swift Observatory, launched on November 20, 2004, is nearing its return to Earth after 22 years of tracking gamma-ray bursts, supernovas, and other cosmic events. The US Space Force predicts that the aging telescope will re-enter the atmosphere on or around Friday.

Weighing approximately 1.5 tons, most of the spacecraft is expected to burn up during reentry. However, according to Brad Cenko, NASA’s mission chief scientist, a handful of components made of denser-than-lead tungsten and some mirror parts could survive. The Space Force is currently tracking the telescope's path, and while surviving wreckage is most likely to plunge into the ocean, reentry zones include swaths of Africa, Australia, India, Southeast Asia, and Central and South America.

Intense solar activity over the past few years dragged the telescope down faster than anticipated. To address the issue, NASA hired Katalyst Space a year ago to conduct a rescue mission. The company launched a three-armed robot named Link in July, but the spacecraft encountered trouble and only got within 7 to 9 miles (12 to 15 kilometers) of the telescope before plunging back to Earth in September.

Following the failed rescue, Swift briefly resumed operations and continued to discover gamma-ray bursts. However, by late October, the telescope's orbit became too low to maintain steady observations, prompting mission controllers to shut down its systems.

Over its operational lifespan, Swift recorded more than 2,000 gamma-ray bursts, 1,400 exploding stars, and numerous comets, asteroids, and star-shredding black holes. The telescope functioned as a first responder for deep-space instruments like the Hubble and Webb space telescopes, quickly swiveling toward erupting celestial events to provide initial alerts. Scientists are currently determining how to address the capability gap left by its retirement.

John Nousek, an astronomer from Pennsylvania State University who led the control team, noted that the end of low-Earth orbit missions is ultimately catastrophic. He expressed hope that the technical successes and lessons learned from Swift can inform future generations of space missions.

"The situation with the Swift Observatory highlights the inherent risks and technical complexities involved in servicing assets in low-Earth orbit. As the space economy grows and commercial entities increasingly contract with government agencies for orbital maintenance and debris mitigation, failures in missions like Katalyst Space's attempted rescue demonstrate that reliable in-space robotics and servicing technologies remain a high-stakes, developing frontier for the aerospace sector." — Dr. Shishir Gupta, Founder & CEO, StartupLanes