John Grunsfeld22 December 1999
Grunsfeld helps restore Hubble's pointing system by replacing failed gyroscope assemblies during the first Servicing Mission 3A spacewalk.
United States · Science / Astronomy. Chronological records rendered directly from the World History Database.
Grunsfeld helps restore Hubble's pointing system by replacing failed gyroscope assemblies during the first Servicing Mission 3A spacewalk.
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