NASA’s Neil Gehrels Swift Observatory re-entered the atmosphere over western Indonesia early Wednesday, concluding more than two decades of cosmic observation with a fiery descent. The spacecraft spent 22 years tracking powerful deep-space explosions across the universe before succumbing to upper-atmosphere drag.
The observatory fell out of low Earth orbit on Nov. 4 after orbital decay accelerated due to solar activity swelling the upper atmosphere. Operating far beyond its original two-year mission design, the space telescope observed more than 2,000 gamma-ray bursts and studied upwards of 1,400 supernovae following its November 2004 launch from Cape Canaveral atop a Delta 2 rocket.
NASA’s Neil Gehrels Swift Observatory plummeted back into Earth’s atmosphere Wednesday over Western Indonesia, ending nearly 22 years in orbit for the gamma-ray burst hunter after a failed attempt to rescue it. https://t.co/7djq9IHksY pic.twitter.com/VUR9sYzdJW
Observatory Captures the Brightest Gamma-Ray Burst
Equipped with optical, ultraviolet, and X-ray instruments, the spacecraft excelled at swiveling toward deep-space events at a moment’s notice. One of its most notable achievements included capturing GRB 221009A, also known as the BOAT or brightest of all time,
which left a speckled orange bull’s-eye pattern across space from rippling explosion waves. Data collected by the observatory contributed to approximately 7,000 scientific papers over its lifetime.
During a two-month period from May to July 2008, the telescope captured an ultraviolet image of the Andromeda galaxy, detecting roughly 20,000 ultraviolet light sources. That 24-hour exposure revealed thousands of dense, hot star clusters spread across Andromeda’s 150,000-light-year-wide ring.
#NASA confirmed Wednesday that its Neil Gehrels Swift Observatory re-entered Earth's atmosphere nearly 22 years after its launch. https://t.co/cQzE0698Jz pic.twitter.com/1EQJM5OvGh
Spacecraft Burns Over Sumatra After Rescue Fails
The spacecraft’s descent concluded a failed effort to salvage the hardware. NASA had contracted Katalyst Space for $30 million to send a robotic tug named LINK to grab the observatory and boost its orbit. However, that rescue craft lost orientation control weeks after its July 3 launch, prompting NASA to call off the capture attempt on Aug. 19. The space telescope made its final observation on Oct. 20 from an altitude of roughly 171 miles.
U.S. Space Force tracking data confirmed that the spacecraft re-entered the atmosphere at 7:39 a.m. EST over Indonesia’s North Sumatra region, near 3 degrees north latitude and 99 degrees east longitude. Agency officials stated that most of the structure burned up during descent, though some components likely survived the fall.
After 22 years in space, NASA’s Neil Gehrels Swift Observatory has ended its mission. The space agency had projected a 1-in-2,100 chance of Swift’s falling debris injuring someone, but the observatory’s demise seems to have occurred without incident.https://t.co/Beg1TSTe8n
Fermi Telescope Identifies Distant Gamma Ray Source
TXS 0128 was identified around five years prior by NASA’s Fermi Gamma-ray Space Telescope as a faint source of gamma rays, the highest-energy form of light. Because the galaxy is roughly 100,000 times less powerful than most similar objects, Fermi needed to accumulate five years of data before classifying it as a gamma-ray source in 2015. Researchers subsequently incorporated the object into a long-running survey managed by the VLBA, which is a network of radio antennas operated by the National Radio Astronomy Observatory stretching from Hawaii to the U.S. Virgin Islands.
