NASA telescope is plunging back to Earth after 22 years in orbit

An aging NASA telescope is hardly clinging to abstraction aft a failed rescue effort near it tottering little and lower. The abstraction bureau said Monday it predicts the Swift Observatory volition apt travel crashing down connected Wednesday.

Most of the 1 ½-ton scope is expected to pain up successful the atmosphere. But a fistful of pieces made of denser-than-lead tungsten and immoderate reflector parts could past reentry, according to NASA's Brad Cenko, the mission's main scientist.

"As of Monday, the U.S. Space Force predicted that the astir 3,200-pound spacecraft volition re-enter the ambiance astatine astir 3:30 a.m. EST, Nov. 4, with an uncertainty of 11 hours," NASA said connected Monday.

Any surviving wreckage volition astir apt plunge into the ocean. But swaths of Africa, Australia, India, Southeast Asia, and Central and South America are wrong the reentry zone. The U.S. Space Force is tracking the telescope's dwindling path.

In a connection connected Monday, NASA said the "risk of harm coming to anyone connected Earth is unlikely" — astir 1 successful 2,100.

"NASA and Space Force volition proceed to show the re-entry and update predictions," the bureau said. 

Its cosmic cremation has the Swift squad mourning, yet afloat of gratitude, for the observations the scope made during its 22 years successful orbit. Swift blasted disconnected connected Nov. 20, 2004, to hunt for immoderate of the biggest explosions successful the universe: gamma-ray bursts and supernovas.

"We've known this time would travel since earlier Swift was launched. At slightest successful low-Earth orbit, what goes up indispensable travel down. And that extremity is catastrophic," said Pennsylvania State University's John Nousek, an astronomer who led the power team.

Intense star enactment implicit the past fewer years dragged Swift down faster than usual. NASA hired Katalyst Space a twelvemonth agone to equine a unreserved rescue. But the company's three-armed robot named Link ran into occupation aft launching successful July and got nary person than 7 miles to 9 miles to the telescope. Link plunged backmost to Earth successful September.

Swift resumed observations erstwhile the rescue effort was called off, discovering adjacent much gamma-ray bursts and different ultrahigh-energy events. But by precocious October, the scope was excessively debased to stay dependable for observations, and its systems were unopen down.

Its last tally: much than 2,000 gamma-ray bursts and 1,400 exploding stars, not to notation a slew of comets, asteroids and star-shredding achromatic holes. The telescope's superpower was its quality to swivel swiftly — frankincense its sanction — toward erupting celestial events.

Shawn Domagal-Goldman, Astrophysics Division manager astatine NASA, told "CBS Mornings" successful June that thing pinpoints gamma-ray bursts similar the Swift Observatory.

"A atomic limb going disconnected doesn't adjacent comparison to the magnitude of vigor that comes retired of these things and it's virtually the biggest explosions successful the universe," Domagal-Goldman said. 

NASA considered Swift a archetypal responder for the Hubble and Webb abstraction telescopes and others that would travel its alerts and supply deeper investigations. Scientists are inactive figuring retired however to capable the gap.

"Our fervent anticipation is that the lessons learned by the successes of Swift tin beryllium applied to caller generations of abstraction missions to accelerate our discoveries astir the universe," Nousek said successful an email.

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