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MER Updates for 2007

Mars Exploration Rovers Update: Spirit Survives Dust Storm and Studies Troll, Opportunity "Sails" from Bay of Toil to Cape Desire

A.J.S. Rayl • January 31, 2007

The Mars Exploration Rovers (MERs) celebrated their 3rd anniversary this month and are now roving into their fourth year of exploration on the Red Planet.

Mars Exploration Rovers Update: Spirit Gets Back Home (To Where It Once Belonged), Opportunity Completes 10K at Victoria's Rim

A.J.S. Rayl • February 28, 2007

Dust storms are beginning to whirl around Mars as spring blooms in the southern hemisphere of the planet and along the equator where the Mars Exploration Rovers (MERs) are roving into their fourth year with a second banner month of exploration.

Mars Exploration Rovers Update: Spirit Homes in on Mitcheltree Ridge, Opportunity Crosses Valley Without Peril

A.J.S. Rayl • March 31, 2007

It's been business as usual on the Red Planet this month as the Mars Exploration Rovers investigated new areas on their ever-moving missions to explore Gusev Crater and Meridiani Planum. Both Spirit and Opportunity chalked up yet another productive month of field geology as they roved onward in their fourth year on location, checking out more of the local environs some 149,597,900 kilometers (93 million miles) away on Earthlings' favored other planet.

Mars Exploration Rovers Update: Spirit Finds Past Water at Home, Opportunity Takes in Tierra del Fuego

A.J.S. Rayl • April 30, 2007

The Mars Exploration Rovers (MERs) traveled to new targets and made discoveries ranging from the magnificent to the mundane in April, four fast weeks that essentially led both of the twin robot field geologists to the next phase of their explorations.

Mars Exploration Rovers Update: Spirit Finds "Explosive" Evidence of Past Water, Opportunity Revs Up, Revisits Cape of Good Hope

A.J.S. Rayl • May 31, 2007

The Mars Exploration Rovers sent home field reports this past month -- some 1,200 days into their missions -- that drew gasps of amazement from both the science and engineering teams.

Mars Exploration Rovers Update: Spirit Detours in Silica Valley, Opportunity Returns to Duck Bay to Enter Victoria

A.J.S. Rayl • June 30, 2007

The Mars Exploration Rovers (MERs) spent the month of June finishing work and clearing their agendas at their respective locales at Gusev Crater and Meridiani Planum in preparation for highly anticipated new assignments in July.

Mars Exploration Rovers Update: Opportunity and Spirit Brave Global Dust Storm

A.J.S. Rayl • July 31, 2007

It was to be a Martian summer to remember. Just one month ago, the Mars Exploration Rovers were set to embark on long-awaited adventures. At Meridiani Planum, Opportunity was preparing for its grand entrance into the magnificent Victoria Crater and on the other side of the planet Spirit was finally going to explore the top of Home Plate, an old, intriguing volcanic formation in the Gusev Crater area. Then a series of dust storms hit suddenly, it was a Martian summer to remember alright, but for far different, windswept reasons.

Mars Exploration Rovers Update: Spirit and Opportunity Shake Some Dust, Assess Storm Damage, and Return to Exploring

A.J.S. Rayl • August 31, 2007

With dust from the summer's storms floating down on and all around them, the Mars Exploration Rovers returned to their exploration agendas this month, picking up right where they left off in July when winds kicked the soils up into the southern hemisphere and forced them to hunker down and conserve power.

Mars Exploration Rovers Update: Spirit Slides Across Home Plate as Opportunity Digs in at Victoria Crater

A.J.S. Rayl • September 30, 2007

It might not be the stuff of Broadway musicals, but the Sun and did "come out tomorrow" on Mars. Just eight weeks after dust from severe storms darkened the Martian skies and threatened their solar-powered lives, the Mars Exploration Rovers finished dusting off as much as possible and took off on their long-anticipated expeditions this month, with Spirit roving onto an old volcanic formation called Home Plate and Opportunity cruising into Victoria Crater.

Mars Exploration Rovers Update: Spirit Homes in on Winter Site as Opportunity Examines Victoria's Ring

A.J.S. Rayl • October 31, 2007

The Mars Exploration Rovers (MER) logged another major milestone in October as they completed a second Martian year of field geology and now may rove on through 2009.

Mars Exploration Rovers Update: Spirit Thrashes with Tartarus, Opportunity Wrestles RAT at Victoria's Ring

A.J.S. Rayl • November 30, 2007

Nail-biting drama and the inevitable signs of aging marked the month of November for the Mars Exploration Rovers, with Spirit accidentally encountering Tartarus, a dust-filled crater, on its way to its winter haven and having to thrash for its life, and Opportunity spending a lot of its time conducting tests on its RAT (rock abrasion tool), which lost another encoder.

Mars Exploration Rovers Update: Spirit and Opportunity Wrap Year 4, Ready to Rove into 2008

A.J.S. Rayl • December 31, 2007

The mission was only supposed to last three months, maybe six months if all went well, but the Mars Exploration Rovers surprised everyone. Demonstrating an uncanny kind of "robot right stuff," they roved far beyond what anyone dreamed and now, in a matter of days, Spirit and Opportunity will celebrate their 4th birthdays and rove into their fifth year of exploring the Red Planet.

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