Communication Satellites in Peril as Cosmic Storm Approaches
Implications of possible damage to any of some 600 communications satellites discussed as Earth is about to experience meteor storm in debris-strewn backwash of comet Temple-Tuttle; Ian H Rowe, chief executive of Crestech, nonprofit group that will track storm for Canada and United States, notes lesser meteor shower damaged satellite in 1993; AT&T Corp says there are at least 14 nations, mostly in Eastern Europe and former Soviet Union, that can be reached by phone only by satellite; most of satellite industry sees little threat; diagrams (M)