©2006, 2004 WGBH Educational Foundation. All rights reserved.

Adapted from Origins, A NOVA Presentation: "Where are the Aliens?". A Thomas Levenson Productions and Unicorn Projects, Inc. production for WGBH/Boston. Stock footage courtesy of Department of Defense, Woods Hole Oceanographic Institution, Lamont-Doherty Earth Observatory, and Corbis. Still images courtesy of NASA and ©Royalty-Free/Corbis. First Life Animation ©Indiana State Museum. Animation courtesy of Edgeworx, NASA/JPL-Caltech, Kees Veenenbos (Art) and Science MOLA team (Data). Mars Exploration Rover Animation courtesy of Dan Maas, Maas Digital LLC. ©2002 Cornell University. All rights reserved. This work was performed for the Jet Propulsion Laboratory, California Institute of Technology, sponsored by the United States Government under Prime Contract #NAS7-1407 between the California Institute of Technology and NASA. Copyright and other rights in the design drawings of the Mars Exploration Rover are held by the California Institute of Technology (Caltech)/Jet Propulsion Laboratory (JPL). Use of the MER design has been provided to Cornell courtesy of NASA, JPL, and Caltech.