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 ...

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 ...

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 ...

The high-velocity impact of foam on the leading edge of a space shuttle wing causes serious damage, initial tests have revealed. The results were released by the Columbia Accident Investigation Board ...

A test-firing of foam shot at a fibreglass mock-up of a space shuttle wing resulted in a gash similar to the kind thought to have led to the breakup of the space shuttle Columbia. Accident ...

(CNN) --The Columbia Accident Investigation Board released results Wednesday from tests that documented significant damage when a small piece of foam struck a mock shuttle wing panel. The tests were ...