Complex sentence: Occasionally this communication was broadcast on live TV while the spacecraft was passing over USA Data were sent to the ground, processed at Goddard Space Center and relayed to Mercury Control Center at Cape Canaveral.
Split into simpler sentences: Occasionally this communication was broadcast on live TV while the spacecraft was passing over the United States. Data from the spacecraft was sent to the ground, processed at the Goddard Space Center and relayed to the Mercury Control Center at Cape Canaveral.