At about 76 seconds, fragments of the Orbiter can be seen tumbling against a background of fire, smoke and vaporized propellants from the External Tank. During Challenger's ascent, this hot gas blow by ultimately cut a swath completely through the steel booster casing; and like a welder's torch, began cutting into the External Tank. The orbiter Challenger was instantly ejected by the blast and went askew into the supersonic air flow. These aerodynamic forces caused structural shattering and complete destruction of the orbiter. Buy this as a superb wall poster, a canvas print or a framed print.