On July 4, 1997, NASA's Mars Pathfinder mission arrived on Mars and began transmitting images from the surface of the Red Planet. The rover, named Sojourner, was the first rover to successfully land ...

PASADENA, California (CNN) -- The Mars Pathfinder's Sojourner rover is the end product of years of testing in desert landscapes. Rovers of all shapes and sizes, of varying weights and composition were ...

When a daring team of engineers put a lander and the first rover on the Red Planet a quarter century ago, they changed how the world explores. On a July evening in 1997, Jennifer Trosper drove home ...