Caleb Scharf

Caleb Asa Scharf is a British-American astronomer and popular science author. He is currently the senior scientist for astrobiology at the NASA Ames Research Center in Mountain View, California. He formerly served as the director of the multidisciplinary Columbia Astrobiology Center at Columbia University, New York.

Also active as a science communicator, Scharf was the 2022 recipient of the Carl Sagan Medal, awarded by the American Astronomical Society for excellence in public communication of planetary science. Provided by Wikipedia