Hubble Gyroscope Repair22 December 1999
Grunsfeld helps restore Hubble's pointing system by replacing failed gyroscope assemblies during the first Servicing Mission 3A spacewalk.
World History Database · Biography facts · Archive · United States of America · Grunsfeld · John Grunsfeld
Historical person
John Grunsfeld Biography
Historical biography and chronological timeline for John Grunsfeld, based on 7 World History Database records associated with United States of America.
7 records1999–20097 events0 places
Chronological biography
1999
Hubble Transmitter Replaced24 December 1999
Grunsfeld helps install a replacement transmitter for sending Hubble scientific data to the ground.
2002
Hubble Power Control Unit Replaced6 March 2002
Grunsfeld helps install a new Power Control Unit after Hubble is completely powered down for the first time in orbit.
2009
Hubble Data Handling System Replaced14 May 2009
Grunsfeld helps install a replacement Science Instrument Command and Data Handling system during the first final-servicing spacewalk.
Wide Field Camera 3 Installed14 May 2009
Grunsfeld helps replace WFPC2 with Wide Field Camera 3, greatly expanding Hubble's ultraviolet, visible and infrared imaging capability.
Cosmic Origins Spectrograph Installed16 May 2009
Grunsfeld helps install the Cosmic Origins Spectrograph, a highly sensitive ultraviolet instrument designed for Hubble.
Hubble Fine Guidance Sensor Refurbished18 May 2009
Grunsfeld helps install a refurbished Fine Guidance Sensor to maintain Hubble's precision pointing capability.
Record provenance
This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.