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‘Ready for flight’ position

Photo: California Science Center
Photo: California Science Center

The tank served NASA’s Space Shuttle program, which ran from 1981 until 2011. Unlike the rest of the components of the Space Shuttle system, the external tanks were not reused.

“With the mating of ET-94 to the Solid Rocket Boosters, we have successfully completed a giant undertaking and the largest part of the space shuttle stack,” Jeffrey Rudolph, the President and CEO of the California Science Center, said in an emailed statement.