NASA and the U.S. Space Force announced on a Monday that the Swift Observatory, a 3,200-pound space telescope, is expected to re-enter Earth's atmosphere on Wednesday, Nov. 4. The re-entry follows a period of increased solar activity that accelerated the spacecraft's orbital decay and a failed private-sector mission intended to stabilize the aging observatory.
Launched on Nov. 20, 2004, the Swift Observatory spent 22 years in low-Earth orbit searching for gamma-ray bursts and supernovas. NASA officials stated that intense solar activity in recent years dragged the telescope toward Earth faster than anticipated. In response, the agency contracted Katalyst Space a year ago for a rescue mission involving a three-armed robot named Link, which launched in July but failed to reach the telescope before re-entering the atmosphere itself in September.
NASA mission scientist Brad Cenko reported that while most of the 1.5-ton telescope is expected to burn up during re-entry, several components made of tungsten and parts of its mirrors may survive. The U.S. Space Force predicted re-entry at approximately 3:30 a.m. EST on Nov. 4, with an 11-hour margin of error. While surviving wreckage is most likely to land in the ocean, the re-entry zone includes regions across Africa, Australia, India, Southeast Asia, and Central and South America.
The scale of the re-entry involves a spacecraft weighing approximately 3,200 pounds, or 1.5 tons. NASA officials calculated the risk of physical harm to individuals on Earth at approximately 1 in 2,100. Residents within the broad re-entry zone, which spans multiple continents, may not notice any direct changes to their daily lives, though the U.S. Space Force is actively tracking the telescope's path to monitor where surviving fragments of tungsten and mirror glass might land.
The loss of Swift creates a temporary technical gap in astronomical observation capabilities. Scientists are currently evaluating how to replace the specific alert functions the telescope provided to other major observatories. The U.S. Space Force and NASA will continue to provide updates on the telescope's trajectory until the predicted re-entry time of 3:30 a.m. EST on Nov. 4. Pennsylvania State University astronomer John Nousek stated that the data gathered by the mission will be used to inform the design of future space missions.