Shuttle accident test reveals 'smoking gun'
A chunk of foam insulation fired at shuttle wing parts blew open a gaping 16 inch hole, yielding what one member of the Columbia investigation team said was the “smoking gun” that proves what brought down the spaceship.
The crowd of about 100 watching the test gasped and cried, “Wow!” when the foam hit – the impact so violent that it popped a lens off one of the cameras recording the event.
