It's worth reflecting for just a moment today that it's 21 years since the Space shuttle Challenger disintegrated as it hurtled towards orbit killing all seven astronauts on board. The BBC tell the story much better than I can here.
Perhaps this was NASA's lowest low, and showed up the Shuttle for the poor compromise craft that it is, and more damningly, amply displayed NASA's disfunctionality in the decades after the moon landings.
I wonder if the anniversary will even merit a mention in today's news outlets?