SpaceShuttleAlmanac

@ShuttleAlmanac

An eBook covering 40 Years of Space Shuttle Development & Operations, 1972 to today. Visit our website for more information

This is the Main Bus Switching Unit MBSU #ISS #JSC #SpaceTweeps #NASA spaceshuttlealmanac.com

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1551 days ago

This is the Main Bus Switching Unit MBSU #ISS #JSC #SpaceTweeps #NASA spaceshuttlealmanac.com

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