Seth Shostak is an American astronomer and author, and is currently the senior astronomer for the SETI Institute. Shostak hosts SETI's weekly radio show/podcast Big Picture Science, has played himself numerous times in TV and internet film dramas, and has acted in several science fiction films.
Filmography
Wow Signal
as Self
A Brief History of Time Travel
as Self
When Aliens Attack
as Self - SETI Institute
The Real 'X-Files'?
as Himself
The Universe, UFO: The Real Deal
as Himself
51 IFLY
as Speaker