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.
United Launch Alliance’s new Vulcan Centaur rocket is slated to fly its second national security mission in February—nearly six months after its first operational launch and almost a year after it was certified to fly military payloads for the Space Force.
