AKTORëT
Dominic Frisby
Self - Narrator- Phil Plait
Self - Astronomer - David J. Helfand
Self - Quest University, Canada - Michelle Thaller
Self - Astronomer, NASA - Steve Jacobs
Self - Chief scientist, Faraday Labs - Geoff Marcy
Self - Astronomer, University of California, Berke - Robert Hurt
Self - Phd., Astronomer, Caltech - Mike Brown
Self - CalTech 
Robert Ballard
Self- Russell Schweickart
Self - Apollo 9 astronault - Oded Aharonson
Self - Planetary scientist, CalTech - Peter H. Schultz
Self - Brown University - Jay Melosh
Planetary Scientist - Giorgio A. Tsoukalos
Self - Publisher, Legendary Times Magazine - Andrea Ghez
Self - Astronomy - Seth Shostak
Self - Senior Astronomer, SETI Institute - Fritz Coleman
Self - Weather Forecaster, KNBC - John Cornett
Self - National Solar Observatory - Ed Moses
Self - National Ignition Facility - Ed Krupp
Self - Griffith Observatory - Rosaly Lopes
Self - NASA-JPL - Juna Kollmeier
Self - Astrophysicist, Carnegie Observatories - Doug Martin
Self - Special Operations Trainer - Peter Rhines
Self - Phd., Oceanographer, University of Washingt - Steve Etchemendy
Self - Monterey Bay Aquarium Research Institute - Chris German
Self - Woods Hole Oceanographic Institution - William L. Ellsworth
Self - Seismologist, U.S. Geological Survey - Mark Young
Self - Astrobiologist, Montana State University - Christopher Scholin
Self - Monterey Bay Aquarium Research Institute - Alan Benimof
Self - College of Staten Island, Cuny
