Complex sentence: NOAA-4, also known as ITOS-G was a weather satellite launched by the National Oceanic and Atmospheric Administration (NOAA) on and that remained operational for 1463 days until deactivated by NOAA on.
Split into simpler sentences: NOAA-4, also known as ITOS-G was a weather satellite operated by the National Oceanic and Atmospheric Administration (NOAA). It remained operational for 1463 days until it was deactivated by NOAA on.