On July 4, 1997, NASA's Mars Pathfinder mission arrived on Mars and began transmitting images from the surface of the Red ...

Add Yahoo as a preferred source to see more of our stories on Google. On Sept. 27, 1997, NASA's Mars Pathfinder mission beamed its very last data transmission back to Earth.The Mars Pathfinder mission ...

This Viking 1 image is one of first images of a sunset as seen from the surface of Mars. It shows the Chryse Planitia region ...

Human colonization may still be a way off, but NASA has been exploring Mars with a series of ever-larger mobile science labs. Some are still going.

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...