OTD…Sept. 21 and Endeavour retirement

The museum-bound space shuttle tank is coming ashore this morning in Marina del Rey, California, for offloading from its transport barge.

Two space shuttle solid rocket boosters — reusable space hardware that launched on 81 missions — are being gifted to the California Science Center to become part of the museum’s launch pad display of Endeavour.

Navigating the 48-mile Panama Canal that slices through the isthmus, the final shipment of a space shuttle external fuel tank emerged into the Pacific for a three-week trek to California.