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.

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 ...

Last shuttle spacewalkers make history above Earth

NASA completed its part in the construction of the International Space Station on Friday, with the final spacewalkers in the 30-year shuttle program attaching an extension boom.

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 ...

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 flight is delayed; Obama visits Giffords

(AP) -- The president was on his way. Space shuttle Endeavour's astronauts were riding out to the launch pad in a van. And a wounded Rep. Gabrielle Giffords had flown in from her Houston rehab hospital to watch her husband ...

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