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THE ASSOCIATED PRESS / FILE PHOTO
CHRISTA MCAULIFFE, the space teacher from Concord, New Hampshire, prepares to put on an oxygen mask for an orientation flight aboard one of the T-28 NASA training planes in Houston, Texas, in this Sept. 30, 1985, file photo. Thirty-two years after the Challenger disaster, a pair of teachers turned astronauts on the International Space Station will pay tribute to McAuliffe by carrying out her science lessons. 69p1.jpg