mkosmo writes "NASA has yet again delayed Space Shuttle Discovery from launching due to growing weather conditions. Next launch attempt is the afternoon of the 4th of July." From the article: "Windows of opportunity are determined by the path of the orbiting international space station, the shuttle's destination. With each passing day, the time for a launch gets earlier by 22-1/2 minutes. That could be good news for NASA because summer thunderstorms are less likely to be a problem earlier in the day."