Mark Boslough

Mark Boslough

饰：Self - Physicist, Sandia National Laboratories

John W. Boyd

John W. Boyd

饰：Self - Senior Advisor to the Center Director, NASA Ames Research Center

Steven Chesley

Steven Chesley

饰：Self - Astrodynamicist, Near-Earth Object Program, NASA JPL

Paul Chodas

Paul Chodas

饰：Self - Astrodynamicist, Near-Earth Object Program, NASA JPL

Eric Christensen

Eric Christensen

饰：Self - Principle Investigator, Catalina Sky Survey

José Luis Galache

José Luis Galache

饰：Self - Astronomer, Minor Planet Center

Peter Jenniskens

Peter Jenniskens

饰：Self - Meteor Astronomer, SETI Institute,(as Peter Jenniskens)

Sergio Camacho Lara

Sergio Camacho Lara

饰：Self - Former Director, UN Office for Outer Space Affairs

Franck Marchis

Franck Marchis

饰：Self - Senior Planetary Astronomer, SETI Institute

Daniel D. Mazanek

Daniel D. Mazanek

饰：Self - Senior Space Systems Engineer, NASA Langley Research Center

David Morrison

David Morrison

饰：Self - Director, Carl Sagan Center SETI Institute

Margaret S. Race

Margaret S. Race

饰：Self - Senior Research Scientist, SETI Institute

Rusty Schweickart

Rusty Schweickart

Seth Shostak

饰：Voice of Jean Baudrillard's 'America'

Gareth Williams

Gareth Williams

Pete Worden

Pete Worden

Donald Yeomans

Donald Yeomans

Nelly Ben Hayoun

Nelly Ben Hayoun

饰：Self - Interviewer

Gareth V. Williams

饰：Self - Associate Director, Minor Planet Center

Russell Schweickart

饰：Self - Apollo 9 Astronaut,(as Rusty Schweickart)