PASADENA, Calif. -- NASA's Spirit rover stopped transmitting data from Mars for more than 24 hours, mission managers said Thursday, calling it an "extremely serious anomaly." NASA received its last ...

Controllers are driving NASA’s Spirit Mars Exploration Rover once more, after a diagnostic test suggested the accelerometers that help the rover determine its orientation on the surface of Mars may be ...

As space agencies race to set foot on the Moon, Mars, and elsewhere, a not-so-glamorous problem could be the key to success: the functionality of a rover’s wheels in alien dirt. When NASA’s Spirit ...

PASADENA — NASA's Spirit rover snapped its first close-ups Friday, using a combination camera and microscope mounted on its arm to photograph in minute detail the rust-colored soil of Mars. The new ...