"G=EMC^2 Glazier" <herbertglazier@webtv.netwrote in message news:22873-45037CD7-300@storefull-3331.bay.webtv.net What if deep far out space has different hazards than space in out solar system? Say we sent a probe to a star 20 LY away and this probe was coasting along at 78% of the speed of light. If it hit a water molecule,buckyball speck of dust it would be destroyed. This begs the question. Can it go through space for 30 years,and never be bothered by anything destructive.? Best to keep in mind collisions happen often if the probe was on the wrong side of the road. Berk Yeah.