Change in astronaut's gut bacteria attributed to spaceflight

Northwestern University researchers studying the gut bacteria of Scott and Mark Kelly, NASA astronauts and identical twin brothers, as part of a unique human study have found that changes to certain gut "bugs" occur in space.

Endeavour poised for next-to-last US shuttle flight

NASA Sunday readied the space shuttle Endeavour for its final mission with liftoff set for 8:56 am (1256 GMT) Monday on the next-to-last flight for the American shuttle program.

Shuttle Endeavour gone forever from space station

Endeavour and its crew of six left the International Space Station and headed home to close out NASA's next-to-last shuttle flight, pausing just long enough Monday to perform a victory lap and test equipment for a future ...

Endeavour soars on 2nd-to-last space shuttle trip

Endeavour blasted off on NASA's next-to-last shuttle flight, thundering through clouds into orbit Monday morning as the mission commander's wounded wife, Gabrielle Giffords, watched along with an exhilarated crowd estimated ...

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