After 20 years of operation, the Pioneer 6 satellite becomes the longest-running spacecraft in history. When launched in 1965, the solar-orbiting satellite had a life expectancy of six months.
The Air Force is on track to reach its annual goal of graduating 1,500 new pilots that had proved elusive to this point, one year after the service launched a sweeping overhaul of its undergraduate pilot training program, Air Education and Training Command said Sept. 14.
