NASA's Upper Atmosphere Research Satellite is heading into the lower atmosphere, where most is expected to burn up on re-entry. But some 300-pound pieces satellite are expected to rain down tomorrow someplace on Earth. NASA says it won't know exactly where until about two hours before they land. Donald Kessler, retired as NASA's senior scientist for orbital research, led a report on space debris for the National Research Council earlier this year.
KCRW
