ATS-6 (Applications Technology Satellite-6) was a NASA experimental satellite, built by Fairchild Space and Electronics Division It's been the world's first educational satellite as well as world's first experimental Direct Broadcast Satellite as part of the Satellite Instructional Television Experiment between NASA and ISRO. It was launched May 30, 1974 and decommissioned July 1979. ATS-6 carried no fewer than 23 different experiments, and introduced several breakthroughs. It was the first 3-a… (More on Ats-6)