Andrew Patrick Vincent Siemion is an astrophysicist and director of the Berkeley SETI Research Center.

[1][2] His research interests include high energy time-variable celestial phenomena, astronomical instrumentation and the search for extraterrestrial intelligence (SETI).

[6] In September 2015, Siemion testified on the current status of astrobiology to the House Committee on Science, Space, and Technology of the United States Congress.

[7][8][9][10][11][12] Siemion regularly appears on television, radio, and other media outlets discussing the search for extraterrestrial intelligence, astrobiology and astrophysics.

He has appeared on Space's Deepest Secrets, Through the Wormhole, Horizon and Aliens: The Definitive Guide.