Mars orbiter in safe mode after glitch

The Mars Odyssey orbiter was in safe mode Monday after a computer glitch prevented the 6-year-old spacecraft from relaying data from the twin rovers rolling across the Martian surface.

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Project leaders said the Mars Odyssey was not in danger. Engineers discovered the problem Friday after a software glitch caused the onboard computers to reboot. The spacecraft last went into safe mode was in December when it was hit by a cosmic ray.

Mission manager Bob Mase of the Jet Propulsion Laboratory in Pasadena said he expected the Mars Odyssey to return to normal by the middle of the week.

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The rovers depend on the Mars Odyssey to send data to Earth and have been using their high-gain antenna to speak directly with Earth since the problem occurred.

One of the rovers, Opportunity, began a detailed investigation of the inner slope of Victoria Crater last week after doing a toe-dip of the massive hole. The six-wheeled robot is about 20 feet below the rim heading toward a light-toned layer of rock that may hold clues about the ancient environment.