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It will remain off-limits until the new Samuel Oschin Center opens. NASA’s space shuttle Endeavour landed for the final time on June 1. The move means the space shuttle Endeavour will be unavailable for public viewing after Dec. The display will include the Endeavor orbiter, which embarked on its first mission with the Space Shuttle program in 1992. "We are grateful to be at this point in the construction of the new Air and Space Center, and thrilled to start `Go for Stack' on July 20 to commemorate Space Exploration Day." "Endeavour will be the star attraction of the Samuel Oschin Air and Space Center, a launchpad for creativity and innovation that will inspire future generations of scientists, engineers and explorers," Jeff Rudolph, president and CEO of the California Science Center, said in a statement. After that, the effort will begin to lift the massive external fuel tank, known as ET-94, into a vertical position, followed by the intricate lifting of the shuttle itself by a large crane to its new location and positioning into a 200-foot-tall vertical display. When the orbiter later reentered the atmosphere, it was unable to withstand the superheated air, which penetrated the wing and destroyed it, leading to the vehicle’s breakup. The effort will begin with the installation of "aft skirts," on which the solid rocket motors will be stacked to form the solid rocket boosters. The International Space Station (ISS), imaged from the space shuttle Endeavour December 9, 2000, after installation of a large solar array (long horizontal panels). The new center is not expected to open until 2025, but July 20 will mark the beginning of a six-month "Go for Stack" process. But construction began last year on the center's $400 million Samuel Oschin Air and Space Center, which will house the shuttle in the vertical launch position with the rocket boosters and fuel tank. The shuttle would rendezvous with a stranded communications satellite and return it to service. The shuttle has been on display horizontally at the Science Center for 11 years. California Science Center officials later this month will begin the process of reconfiguring the space shuttle Endeavour into a planned vertical display with rocket boosters and an external fuel tank, marking the first time such a feat will have been performed with a shuttle outside of a NASA facility.