sentences:  Widely known as the "father of the geosynchronous satellite", Harold Rosen, an engineer at Hughes Aircraft Company, invented the first operational geosynchronous satellite, Syncom 2.It was launched on a Delta rocket B booster from Cape Canaveral July 26, 1963.The first geostationary communication satellite was Syncom 3, launched on August 19, 1964, with a Delta D launch vehicle from Cape Canaveral.