Extreme Universe (2010)

Phil Plait

Self - Astronomer

Dominic Frisby

Self - Narrator

David J. Helfand

Self - Quest University, Canada

Michelle Thaller

Self - Phd., astronomer, NASA Goddard Space Flight Center

Steve Jacobs

Self - Chief scientist, Faraday Labs

Robert Hurt

Self - Phd., Astronomer, Caltech