Space: Getting Ready to Try Again

For the first time since that winter day 29 months ago when the shuttle Challenger and its crew of seven disappeared in a sickening cloud of smoke and debris, signs of vitality were evident at Florida's Kennedy Space Center last week. To the cheers of hundreds of workers, the redesigned 85-ton orbiter Discovery was rolled into the 52-story Vehicle Assembly Building to be attached to the two solid-fuel rocket boosters and the external fuel tank. This week plans call for the entire structure to be moved, at a glacial pace, more than four miles to launching pad 39B and poised for...