NASA faces congressional hearings and scrutiny in the wake of two failed Mars missions. (4/14/00)

Gwen Ifill discusses with science experts the future of space missions, after the failure of NASA's Mars Polar Lander. (12/7/99)

REALAUDIO: A project scientist for the Mars Polar Lander details the latest attempt to contact the missing spacecraft. (12/6/99)

NASA scientists hope for contact with the Mars Polar lander sometime Friday night or over the weekend. (12/3/99)

Jeffrey Kaye reports on the Mars Polar Lander's mission to the Red Planet. (12/2/99)

Mapping a planet and searching for water, NASA's Polar Lander begins its three-month mission. (12/2/99)

Exploring Mars as it was 100,000 years ago, NASA's new microlanders get below the surface. (12/2/99)

A look at the NASA missions that have led up to the Polar Lander. (12/2/99)

The Red Planet in 3-D
Mars Exploration Program
Mars Polar Lander
Deep Space 2