fjzappa t1_iw0267j wrote
Reply to comment by invaderzim257 in NASA leaders recently viewed footage of an underwater dive off the East coast of Florida, and they confirm it depicts an artifact from the space shuttle Challenger by marketrent
Yes it's relevant. The foam was a different composition than the original. Original composition foam did not flake off in flight. But it had some pretty strong solvents that were emitted to the air as it cured.
> In July 2005, NASA reported that they changed the foam insulation a decade earlier, switching from a foam-blowing agent that used an environmentally damaging chlorofluorocarbon (CFC) to one using a more benign hydrofluorocarbon (HFC) blowing agent. The newer HFC-blown foam insulation is a significant change since it is reported to be more brittle than the originally specified insulation material.
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