"The Challenger's reaction control system ruptured and a hypergolic burn of its propellants occurred."
Hypergoilic is the definition of two substances that ignite upon contact with each other without an external energy source.
For example: Monomethyl hydrazine (MMH) and nitrogen tetroxide (N2O4)
Back when the Challenger disaster happened, we all saw (and people have since referred to it as) an explosion. Everyone assumed the astronauts had been killed instantly, and there was no reason to believe otherwise.
Months later, after the families had buried their dead and gone on with their lives, a couple of scientists tell the press the astronauts were, in fact, still alive at the time of the explosion, and were killed when the separated crew cabin made contact with the ocean.
Naturally, I thought, hey, what tact. Open up those wounds and pour a salt shaker into them just so you could get your name in the effing newspapers. I mean, for God's sake, did we really need to know they all suffered immensely prior to death? Some things are better left unsaid.
So, if you wish to discuss something like that, fine. Just don't do it in my presence.
As far as I am concerned, the Challenger astronauts all died instantly.
The end.