NASA is pulling the plug on one of its great observatories — the Spitzer Space Telescope — after 16 years of scanning the universe with infrared eyes.
The end comes Thursday when ground controllers put the aging spacecraft into permanent hibernation.
For years,
Spitzer will continue to fall even farther behind Earth, posing no threat to another spacecraft or anything else, officials said.
“Although it would be great to be able to operate all of our telescopes forever, this is not possible,” NASA’s astrophysics director Paul Hertz said in an email.
NASA originally planned to decommission Spitzer a few years ago, but put off its demise as the James Webb Space Telescope, a vastly more elaborate infrared observatory, kept getting delayed.
Webb’s launch is now off until at least early next year. This week, the Government Accountability Office warned of further delays because of technical challenges.
It had been costing NASA about $12 million a year lately to keep Spitzer going. Hertz said with “no guarantee” Spitzer would last until Webb’s launch, the decision was made to shut it down now.
Launched in 2003, Spitzer was the last of NASA’s four so-called great observatories. With its infrared instruments, it was able to sense heat coming off celestial objects like night vision goggles, said Suzanne Dodd, a former project manager who now oversees NASA’s Deep Space Network at the Jet Propulsion Laboratory in Pasadena, California.
By seeing through dust, “we’re lifting the cosmic veil on the universe,” Dodd said.
Still sending back breathtaking pictures, the Hubble Space Telescope rocketed into orbit in 1990 to observe the cosmos in visible and ultraviolet light; it will celebrate its 30th anniversary in April.
The Compton Gamma Ray Observatory was launched in 1991, but because of equipment failure was destroyed in a fiery re-entry in 2000. The Chandra X-Ray Observatory is still working since its 1999 launch.
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