Hired Mars expert Dr. Zachary Walzer (Jack Haley) fights to prove the validity of the Mars story. Can he convince the government to mount a manned mission to Mars? Agent in charge Tom Taylor (James Rich) faces pressure from both the Canadians and his own superiors, and has to make a call.

Rob Manning, chief engineer for JPL's Mars Program, walks us through a simulation of the Mars Phoenix landing. This video is in the Public Domain

The High Resolution Imaging Science Experiment in orbit around Mars has examined many possible landing sites for the 2009 Mars Science Laboratory rover, including the Nili Fossae area seen here. Courtesy NASA/JPL-Caltech

Two rovers roaming the surface of Mars find proof that it was once awash in water.

Explore the surface of Mars as never before with two adventurous robots named Spirit and Opportunity.

MARS stands for Magenn Air Rotor System, but a MARS turbine isn't your typical windmill. It's a blimp floating hundreds of feet in the air. Tune in as Josh and Chuck explain how this turbine works -- and whether it will become the future of wind power.

Literally going where no spacecraft has gone before, NASA's Phoenix Mars Lander will visit the north polar region of Mars. Courtesy NASA/JPL-Caltech

Who ever imagined the surface of Mars could be this colorful and dynamic? Spacecraft and rovers are now sending back one of the greatest collections of photographs ever. Astronomer Phil Plait explores the fast-moving world of cosmic discovery.

The nerds review Mars Attacks!, Tim Burton’s alien invasion spoof that features a powerful cast of well-known actors. Spoilers abound!

Did Mars once have an environement capable of supporting life ? Nasa next rover will further unravel that mystery. This video is in the Public Domain, for more informations please visit: http://www.jpl.nasa.gov/imagepolicy.cfm