From NASA SMD: “This is a farewell video is in honor of Dr. Thomas H. Zurbuchen (Dr. Z) on his last day of federal service – December 31, 2022. Dr. Z began as the NASA Science Mission Directorate (SMD) Associate Administrator (AA) in October 2016. He made a significant number of major accomplishments during his 6 year tenure. The overall NASA Science budget grew to its highest level. Numerous major missions were conceived and selected.”