A chunk of foam fired at high speed cracked a pair of space shuttle wing parts Friday, offering what investigators said was the most powerful evidence yet to support the theory that a piece of the ...

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In this image from television on Friday, a chunk of foam is fired at high speed into a space shuttle wing panel during a test in San Antonio. Officials say the test lends credence to the theory that ...

SAN ANTONIO — Columbia investigators obtained their first direct evidence in a test Friday that foam debris caused the space shuttle accident: a foam block fired at a wing panel left a three-inch ...

Investigators still have no direct link between flying foam and a hole in the leading edge of the shuttle Columbia's left wing, but initial testing ruled out extensive tile damage from foam hitting ...

HOUSTON — On the day shuttle astronauts exchanged hugs and received a traditional Russian welcome of bread and salt after docking with the International Space Station, NASA said Thursday that more ...