It's interesting (albeit depressing) to think about how every generation in the television (and now internet) age seems to have at least one of these events that occurs right on the border of adulthood; when you've become old enough to have a sense of the world and the personal impact of the event kind of jolts you into reality, so to speak. For my dad it was JFK's assassination and for me it was 9/11.
It's also notable that when Columbia disintegrated upon re-entry in 2003 the media and public at large didn't seem to pay it much attention at all (or at least I don't remember it being such a big deal).
Probably because it wasn't broadcast live.
There's a point to be made that people were more prepared for a possible disaster given the reports of damage to the shuttle that the crew provided days ahead, compared to the absolute surprise and shock at Challenger, and the horrifyingly clear camera footage provided at a lower altitude.
Which would that be for people born in 1990-2000? I was born in ’96, but I’m not sure anything really traumatic happened in the past years.
Well, the Paris attacks might be the closest thing, but even that isn’t really traumatic.
While I was originally musing over negative events, maybe you could consider Obama's first election as the same sort of major news event (which I suppose could have been negative depending on your perspective)? That would put you right around 12 years old, which is about the time frame I was thinking of.
Then I really have no idea, haha. It's also quite possible that we're so inundated with sensationalized news these days that the idea of one single event sort of stopping people in their tracks just isn't something likely to happen anymore.
The kind of event we're speaking of though is one that strikes at the core of a nation's identity and/or faith in humanity.
I believe these events transcend news. They tend to happen once a decade or two, and as you age the second or third perhaps starts to lose its power.
Also, people have a certain capacity for tragedy, pass it and you start to go numb.
As we learned later about the rubber o-rings failing in cold weather, the solution has always been framed as not launching in those conditions.
But, why not use a different material, or design away the o-rings to avoid the problem in the first place?
Edit: question is already answered here: https://news.ycombinator.com/item?id=13239241