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Hubble telescope restores 3rd instrument in slow return to operations - Space.com

Hubble telescope restores 3rd instrument in slow return to operations - Space.com

Hubble telescope restores 3rd instrument in slow return to operations - Space.com
Nov 30, 2021 1 min, 1 sec

Three of the Hubble Space Telescope's four science instruments are now back to work as the team behind the observatory continues to investigate and assess a glitch that sent all four instruments into safe mode on Oct.

The Space Telescope Imaging Spectrograph (STIS) is now the only Hubble instrument that remains in safe mode.

Related: The best Hubble Space Telescope images of all time.

The observatory's science instruments went into safe mode after issues arose with a type of message that governs the instruments' internal clocks.

Two days later, "the science instruments again issued error codes indicating multiple losses of synchronization messages" and went into safe mode, according to a NASA statement.

— The Hubble Space Telescope and 30 years that transformed our view of the universe .

The Hubble Space Telescope, a joint project of NASA and the European Space Agency (ESA), entered Earth orbit in April 1990 after launching aboard space shuttle Discovery!

During the observatory's first two decades, astronauts were able to visit Hubble aboard space shuttles to replace instruments and conduct other upgrades and repairs.

But for the past 10 years, Hubble has been on its own: NASA retired the fleet of space shuttles in 2011, so astronauts can no longer visit the observatory.

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