Radio and TV signals, our beacons to ETs, travel at the speed of light. They reach Mars in as little as four and a half minutes and the nearest star, besides our Sun, in four years.
Olympus Mons, the huge Martian volcano, is three times the height of Mount Everest. Its base covers an area the size of Arizona.
The world's first radio telescope was built by amateur astronomer Grote Reber in 1937, in his backyard in Wheaton, Illinois. He used it to make the first radio maps of the sky.
Spirit and Opportunity each carry a DVD containing the names of three and a half million people collected during NASA's "Send Your Name to Mars" Campaign.
Narrator: When we finally encounter an extraterrestrial life form, will we study it under a microscope or get to shake hands? Either way it's bound to change out lives. Now: ET Tech, the scientific search for extraterrestrial life, on Modern Marvels.
Seth Shostak, Ph.D.
Senior Astronomer, SETI Institute
Michael Meyer, Ph.D.
NASA Astrobiology Senior Scientist
James B. Garvin, Ph.D.
NASA Chief Scientist for Mars
John D. Rummel, Ph.D.
NASA Planetary Protection Officer
Author, "Life Beyond Earth"
Roger Launius, Ph.D.
Space Historian, Smithsonian Institution
Frank Drake, Ph.D.
Senior Scientist, SETI Institute
Jill Tarter, Ph.D.
Director, Center for SETI Research
Executive Producer: Don Cambou
Writer: Jim Cirigliano
Producer: Jim Cirigliano
Associate Producer: Gloria L. Morris
Line Producer: Paul Dzilvelis
Editor: Brian Johnson
Narrator: Max Raphael
Music: Alan Ett Music Group
Producer: Bruce Nash
Creator: Bruce Nash
Production Manager: Shelia Collins
Post Producer: Lauren Levine
Clearance Supervisor: Katie Del Core
Director of Research: Anthony Lacques
Post Production Manager: Gary Reid
Production Auditor: Dani Eslin
Assistant Accountant: Sheridan Liu
Assistant Accountant: Dennis Luciani
Clearance Coordinator: Susan Wichmann
Coordinator: Rosalyn McVay
Assistant Editor: Taylor Greathead
Post Coordinator: Laura Steinhoff
Post Assistant: Alexander Rubinow
Voice over Coordinator: Melanie Pipes
Camera: David Insley
Camera: Julio Luzquinos
Camera: Jesse Phinney
Field Audio: William R. Burnside
Field Audio: Brian Garfield
Field Audio: Sam Insley
Online Editor: Doug Nolan
Sound Mixer: Paul Ray
Animation: Doug Whitney
Bobbie Faye Ferguson
UC Santa Cruz/Lick Observatory
Executive Producer: Beth Dietrich-Segarra
Produced by Actuality Productions, INC