500-mile footprint for debris
The Upper Atmosphere Research Satellite (UARS) is expected to re-enter Earth’s atmosphere as early as Thursday or as late as Saturday. About 9 percent of the 13,000-pound satellite is expected to impact a 500-mile swath of land or sea. NASA says there is a 1-in-3,200 chance that one of the world’s 7 billion inhabitants will be struck. Read related article.