Asri-unix.1113 net.space utzoo!decvax!ucbvax!ARPAVAX:C70:sri-unix!csin!cjh@CCA-UNIX Sun Mar 28 18:17:14 1982 Re: Shuttle Visibility If the shuttle is within 150 miles due south of DC it's less than 500 miles south of Boston; at that distance an object <32 miles up is above the theoretical horizon. The additional 100+ miles of shuttle elevation would put it some distance above the horizon, although it would not be that close or that high for long.