Astronaut Business is Tough Stuff

(AP) HOUSTON - An astronaut collapsed twice Friday, a day after she returned to Earth in the shuttle Atlantis, and officials attributed her wobbles to the adjustment from 12 days at zero gravity.

Heidemarie Stefanyshyn-Piper left the welcome-home ceremony at the hangar at Ellington Field but was not taken to a hospital. Officials said she was doing fine.

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