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News Release Archive:

News Release 398 of 947

August 31, 2005 10:00 PM (EDT)

News Release Number: STScI-2005-24

Hubble Space Telescope Begins "Two-Gyro" Science Operations

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Image: Hubble Space Telescope Rate Gyro Assemblies

Hubble Space Telescope Rate Gyro Assemblies

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Hubble has a sophisticated system that controls its position 24 hours a day. It is called the Pointing Control System (PCS). The PCS is composed of gyroscopes, reaction wheels, and fine guidance sensors.

Image Type: Illustration

Illustration Credit: NASA, ESA, A. Feild (STScI), and Lockheed Martin

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