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By NASA
2 min read
NASA’s Hubble Space Telescope Pauses Science Due to Gyro Issue
Hubble orbiting more than 300 miles above Earth as seen from the space shuttle. NASA NASA is working to resume science operations of the agency’s Hubble Space Telescope after it entered safe mode Nov. 23 due to an ongoing gyroscope (gyro) issue. Hubble’s instruments are stable, and the telescope is in good health.
The telescope automatically entered safe mode when one of its three gyroscopes gave faulty readings. The gyros measure the telescope’s turn rates and are part of the system that determines which direction the telescope is pointed. While in safe mode, science operations are suspended, and the telescope waits for new directions from the ground.
Hubble first went into safe mode Nov. 19. Although the operations team successfully recovered the spacecraft to resume observations the following day, the unstable gyro caused the observatory to suspend science operations once again Nov. 21. Following a successful recovery, Hubble entered safe mode again Nov. 23.
The team is now running tests to characterize the issue and develop solutions. If necessary, the spacecraft can be re-configured to operate with only one gyro. The spacecraft had six new gyros installed during the fifth and final space shuttle servicing mission in 2009. To date, three of those gyros remain operational, including the gyro currently experiencing fluctuations. Hubble uses three gyros to maximize efficiency, but could continue to make science observations with only one gyro if required.
NASA anticipates Hubble will continue making groundbreaking discoveries, working with other observatories, such as the agency’s James Webb Space Telescope, throughout this decade and possibly into the next.
Launched in 1990, Hubble has been observing the universe for more than 33 years. Read more about some of Hubble’s greatest scientific discoveries.
Media Contacts:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Alise Fisher
NASA Headquarters, Washington, D.C.
alise.m.fisher@nasa.gov
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Last Updated Nov 29, 2023 Editor Andrea Gianopoulos Contact Location Goddard Space Flight Center Related Terms
Astrophysics Astrophysics Division Goddard Space Flight Center Hubble Space Telescope Missions Science Mission Directorate Keep Exploring Discover More Topics From NASA
Hubble Space Telescope
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By NASA
SSE-Cassini Home Cassini Top 10 Images of 2011 Cassini Overview Mission About the Mission The Grand Finale The Team Top 10s Saturn Tour FAQ Science Overview Rings Titan Enceladus Moons Magnetosphere Multimedia All Multimedia Audio Featured Raw Images Graphics Hall of Fame Images Videos 1 min read
Cassini Top 10 Images of 2011
Where were you during the storm? In 2011, NASA’s Cassini spacecraft circled Saturn for a front-row view of the huge storm there. One of those looks made the mission scientists’ list of Top 10 images of 2011. What else made the list? Check it out.
Groovy Enceladus
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Quintet of Moons
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Catching Its Tail
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By NASA
SSE-Cassini Home Cassini Top 10 Images of 2012 Cassini Overview Mission About the Mission The Grand Finale The Team Top 10s Saturn Tour FAQ Science Overview Rings Titan Enceladus Moons Magnetosphere Multimedia All Multimedia Audio Featured Raw Images Graphics Hall of Fame Images Videos 1 min read
Cassini Top 10 Images of 2012
As the Cassini spacecraft roams the Saturnian system, each year it opens new windows on an amazing corner of our solar system. Images of mighty Saturn, its majestic rings, and the dynamic moons continue to stun us, offering ever-changing vistas that are truly inspiring. This collection of 10 best images was selected by the scientists on the mission. You can imagine their pride.
A Splendor Seldom Seen
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By NASA
SSE-Cassini Home Cassini Top 10 Images of 2013 Cassini Overview Mission About the Mission The Grand Finale The Team Top 10s Saturn Tour FAQ Science Overview Rings Titan Enceladus Moons Magnetosphere Multimedia All Multimedia Audio Featured Raw Images Graphics Hall of Fame Images Videos 1 min read
Cassini Top 10 Images of 2013
We’ve shared 150 press images through 40 news releases and special features during 2013.
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By NASA
SSE-Cassini Home Cassini 10 Years at Saturn Top… Cassini Overview Mission About the Mission The Grand Finale The Team Top 10s Saturn Tour FAQ Science Overview Rings Titan Enceladus Moons Magnetosphere Multimedia All Multimedia Audio Featured Raw Images Graphics Hall of Fame Images Videos 1 min read
Cassini 10 Years at Saturn Top Images
The Cassini team is proud to celebrate 10 years since arriving at Saurn with this collection of images selected by members of the team.
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