David Grinspoon (1989) was appointed by NASA to be the Senior Scientist for Astrobiology Strategy. He has been a frequent advisor to NASA on space exploration strategy, a long-time investigator for NASA-funded programs and a science team member on several active interplanetary spacecraft missions. Dr. Grinspoon is the former inaugural Blumberg NASA/Library of Congress Chair in Astrobiology (2012-2013). In 2022, he was appointed as a member of the NASA independent study team on unidentified aerial phenomena and elected as a lifetime member of the American Association of the Advancement of Science.