Complex sentence: Later that year, Dr. Wolff left Hawaii as she was named Director of the Kitt Peak National Observatory (KPNO) in Tuscon, Arizona until 1987 when she became the Director of the National Optical Astronomy Observatories (NOAO) until 2001.
Split into simpler sentences: Later that year, Dr. Wolff left Hawaii as she was named Director of the Kitt Peak National Observatory (KPNO) in Tuscon, Arizona until 1987. In 1987, she was named the Director of the National Optical Astronomy Observatories (NOAO) until 2001.