At 10:39 AM Eastern Standard Time, the orbiter Columbia left the pad. It was the 113th flight of the Space Shuttle program. The crew of seven, a mix of astronauts from the United States and Israel, were bound for sixteen days of microgravity research. They would conduct experiments on flame behavior, soot production, and the physiology of astronauts. The science was meticulous, scheduled, incremental.
Columbia was the oldest shuttle in the fleet. Its first mission had been in 1981. This one, STS-107, had been delayed eighteen times. The vehicle was known to be robust, but also carried the legacy of its design compromises. The external tank shed foam insulation on ascent, as it often did. A piece, roughly the size of a suitcase, struck the leading edge of the left wing. The impact was recorded by ground cameras. Engineers requested, and were denied, satellite imagery to assess the damage. The concern was deemed not outside the family of known flight risks.
For over two weeks, the crew worked in orbit. They filmed themselves in weightlessness, gave educational tours of their laboratory. The damage to the wing’s reinforced carbon-carbon panels remained a silent variable. On the morning of February 1, during re-entry, superheated plasma would enter the breach and destroy the internal wing structure. The vehicle would disintegrate. But on January 16, there was only the climb to orbit. The main engines cut off. The external tank was jettisoned. The familiar call came from Mission Control: “Columbia, Houston. You have a good MECO, and you’re right on the money.” They were precisely where they were supposed to be.