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Mars Exploration Rovers Update: Spirit Works as Team Tests Exit Moves, Opportunity Roves to Block Island

A.J.S. Rayl • July 31, 2009

The Mars Exploration Rovers maintained a busy schedule in July: Spirit worked day and night doing whatever it could to make use of its abundant energy; Opportunity effectively treated its “hot” right front wheel and got back to making some consecutive long drives toward the still distant Endeavour Crater.

Mars Exploration Rovers Update: Spirit Embedded in Paydirt, Opportunity Roving on 'Hot' Wheel

A.J.S. Rayl • June 30, 2009

It's been a relatively quiet but scientifically significant month on the Red Planet for the Mars Exploration Rovers. While Opportunity continued its long journey to Endeavour Crater, forced to take it slower and make longer stops to rest its 'hot' front wheel, Spirit, seemingly just biding its time embedded in a sand pit it slipped into in April, turned up one of the most intriguing discoveries on the mission to date.

Mars Exploration Rovers Update: Spirit Sand Snared and Dusted, Opportunity Rests and Roves

A.J.S. Rayl • May 31, 2009

The Mars Exploration Rovers hit some rough patches in May as Spirit sat stuck in a sand patch all month and Opportunity had to stop again to rest its right front wheel but with a little help from Mars, the intrepid, twin robot field geologists cruised through the summer solstice with the energy and invincibility of a couple of teenage robots.

Exciting Times Ahead: 2010 Will Sizzle, and 2011 Will Really Cook!

Alan Stern • May 18, 2009

Today, I'm kicking the week off with a look at the unusually intense confluence of far flung planetary exploration that's just around the corner, starting the middle of next year.

Spirit Stuck

Mark Adler • May 12, 2009

The Spirit rover on Mars is currently stuck in a patch of loose material. After a few attempts to get free, the team has wisely decided to do further experiments on Earth instead of on Mars.

Mars Exploration Rovers Update: Spirit Endures Reboots and Amnesia, Opportunity Races Forward

A.J.S. Rayl • April 30, 2009

The Mars Exploration Rovers challenged their ground crews with an April full of high drama, a little suspense, and a lot of energy. While Spirit lived through a kind of robot soap opera, complete with bewildering reboots and bouts of amnesia, Opportunity roved forward and back into the fast lane on a restored front wheel, slowing down for a brief visit to a series of small, intriguing craters and an unplanned close encounter with a pesky little purgatoid.

Spirit hiccup

Emily Lakdawalla • April 13, 2009

Another of those dreaded "status reports" from the Jet Propulsion Laboratory arrived in my mailbox just now.

Mars Exploration Rovers Update: Spirit Breaks Rove Record, Opportunity Sees Endeavour's Distant Rim

A.J.S. Rayl • March 31, 2009

The Mars Exploration Rovers logged a memorable March, with Spirit finally making some serious tracks and setting a new driving record for a five-wheeled rover, and Opportunity getting a first glimpse on the distant horizon of its next big attraction, Endeavour Crater as it crossed a geologic boundary into a new field of "blueberries."

Spirit puts the pedal to the metal

Emily Lakdawalla • March 24, 2009

Way to go, Spirit! The last two drives for the five-wheeled rover have taken it a total of about 40 meters west, traveling around the north edge of Home Plate. If I'm not mistaken, that's more than Spirit has driven in the last 400 sols combined.

Planetary Surface Processes Field Trip: Day 6

Ryan Anderson • March 20, 2009

Today we visited Grand Falls and the nearby dune field. Grand Falls is especially interesting because it combines many of the processes that are active in shaping planetary surfaces.

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