Word around the campfire is that The Challenger Disaster (airing Saturday, 11.16 on the Discovery and Science channels) is an engrossing, well-made docudrama. I haven’t seen it yet, but I wonder if it will mention the ghastly revelation that at least three crew members survived the explosion and were conscious until the shattered crew compartment smashed into the ocean at 2000 mph — a drop of 65,000 feet that took about two minutes and 45 seconds.