NASA's Aging Swift Space Telescope Plunges Back to Earth After 22 Years

An aging NASA telescope is returning to Earth after a failed rescue effort left it on a path toward an uncontrolled atmospheric reentry. The Neil Gehrels Swift Observatory, which spent over two decades in orbit, is projected to come crashing down mid-week, according to space agency officials.

Most of the 3,200-pound spacecraft is anticipated to disintegrate as it encounters the atmosphere. However, mission scientists note that denser components, such as mirror parts and tungsten pieces, could potentially survive the extreme heat and reach the ground.

The U.S. Space Force has been tracking the dwindling path of the satellite, predicting its reentry window with an uncertainty of several hours. While the majority of any surviving wreckage is expected to plunge into the ocean, parts of Africa, Australia, India, Southeast Asia, and Central and South America fall within the potential reentry zone.

NASA has stated that the risk of harm to anyone on Earth remains very low, estimated at roughly 1 in 2,100. Both NASA and the U.S. Space Force continue to monitor the descent and update their impact predictions as the satellite's altitude diminishes.

Launched on November 20, 2004, the Swift Observatory far exceeded its initial two-year mission timeline. Its primary objective was to detect and study gamma-ray bursts, the largest explosions in the universe, along with supernovas. Over its 22-year lifespan, the telescope recorded more than 2,000 gamma-ray bursts and 1,400 exploding stars.

Intense solar activity over the past few years accelerated the orbital decay of the spacecraft, dragging it down faster than normal. In an attempt to save the mission, NASA hired Katalyst Space to launch a robotic rescue probe in July, but the device experienced technical difficulties and returned to Earth in September without reaching the telescope.

Following the failed rescue, Swift resumed observations briefly until its systems were shut down in late October because it had dropped too low to maintain steady operations. Astronomers and mission leaders expressed deep gratitude for the spacecraft's historic contributions to astrophysics, noting that it served as a vital first responder for other major space observatories like Hubble and the James Webb Space Telescope.