Farewell, Dr. Z! NASA science chief to step down after 6 years on the job
Thomas Zurbuchen guided the agency's Science Mission Directorate through an eventful and successful stretch that saw the launch of the James Webb Space Telescope, among other projects.
TroibNews 
Thomas Zurbuchen guided the agency's Science Mission Directorate through an eventful and successful stretch that saw the launch of the James Webb Space Telescope, among other projects.
