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NASA Mars Rover Opportunity Ascends To Level Ground

Date:
August 31, 2008
Source:
NASA/Jet Propulsion Laboratory
Summary:
NASA's Mars Exploration Rover Opportunity has climbed out of the large crater that it had been examining from the inside since last September.

NASA's Mars Exploration Rover Opportunity has climbed out of the large crater that it had been examining from the inside since last September. The rover's navigation camera captured this view back into the crater just after finishing a 6.8-meter (22-foot) drive that brought Opportunity out onto level ground during the mission's 1,634th Martian day, or sol (Aug. 28, 2008).
Credit: NASA/JPL-Caltech

NASA's Mars Exploration Rover Opportunity has climbed out of the large crater that it had been examining from the inside since last September.

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"The rover is back on flat ground," an engineer who drives it, Paolo Bellutta of NASA's Jet Propulsion Laboratory, announced to the mission's international team of scientists and engineers.

Opportunity used its own entry tracks from nearly a year ago as the path for a drive of 6.8 meters (22 feet) bringing the rover out over the top of the inner slope and through a sand ripple at the lip of Victoria Crater. The exit drive, conducted late Thursday, completed a series of drives covering 50 meters (164 feet) since the rover team decided about a month ago that it had completed its scientific investigations inside the crater.

"We're headed to the next adventure out on the plains of Meridiani," said JPL's John Callas, project manager for Opportunity and its twin Mars rover, Spirit. "We safely got into the crater, we completed our exploration there, and we safely got out. We were concerned that any wheel failure on our aging rover could have left us trapped inside the crater."

The Opportunity mission has focused on Victoria Crater for more than half of the 55 months since the rover landed in the Meridiani Planum region of equatorial Mars. The crater spans about 800 meters (half a mile) in diameter and reveals rock layers that hold clues to environmental conditions of the area through an extended period when the rocks were formed and altered.

The team selected Victoria as the next major destination after Opportunity exited smaller Endurance Crater in late 2004. The ensuing 22-month traverse to Victoria included stopping for studies along the route and escaping from a sand trap. The rover first reached the rim of Victoria in September 2007. For nearly a year, it then explored partway around the rim, checking for the best entry route and examining from above the rock layers exposed in a series of promontories that punctuate the crater perimeter.

Now that Opportunity has finished exploring Victoria Crater and returned to the surrounding plain, the rover team plans to use tools on the robotic arm in coming months to examine an assortment of cobbles -- rocks about fist-size and larger -- that may have been thrown from impacts that dug craters too distant for Opportunity to reach.


Story Source:

The above story is based on materials provided by NASA/Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Jet Propulsion Laboratory. "NASA Mars Rover Opportunity Ascends To Level Ground." ScienceDaily. ScienceDaily, 31 August 2008. <www.sciencedaily.com/releases/2008/08/080830162424.htm>.
NASA/Jet Propulsion Laboratory. (2008, August 31). NASA Mars Rover Opportunity Ascends To Level Ground. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2008/08/080830162424.htm
NASA/Jet Propulsion Laboratory. "NASA Mars Rover Opportunity Ascends To Level Ground." ScienceDaily. www.sciencedaily.com/releases/2008/08/080830162424.htm (accessed October 31, 2014).

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