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Mars Exploration Rovers Update: Spirit Works Winter Campaign as Opportunity Roves Adrift on way to Victoria

Posted by A.J.S. Rayl on 2006/05/31 12:00 CDT

The Mars Exploration Rovers are now well into their second Martian winter and, all things considered, both Spirit and Opportunity are faring pretty well for being, essentially, aging Baby Boomers on bitter cold, dusty alien planet some 50 million miles away from home.

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Mars Exploration Rovers Update: Spirit Pulls up to Winter Home as Opportunity Races to Victoria

Posted by A.J.S. Rayl on 2006/04/28 12:00 CDT

Two years and 3 months after they bounced to landings at Gusev Crater and Meridiani Planum, the Mars Exploration Rovers are heading into their second, long cold Martian winter.

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Mars Exploration Rovers Update: Spirit Makes Tracks for McCool Hill as Opportunity Roves to Victoria

Posted by A.J.S. Rayl on 2006/03/31 11:00 CST

As autumn falls toward winter on the southern hemisphere of the Red Planet, the Mars Exploration Rovers are on the move again. Although the twin robot field geologists are roving as quickly as possible to their next major destinations, the pace is slowing down.

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Mars Exploration Rovers Update: Spirit Slides into Home Plate as Opportunity Finishes Work at Erebus

Posted by A.J.S. Rayl on 2006/02/28 11:00 CST

As early autumn descends on the southern hemisphere of the Red Planet, the Mars Exploration Rovers are on the move and picking up the pace as they rove toward their next major destinations.

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Mars Exploration Rovers Update: Spirit Heads to Home Plate as Opportunity Finally Roves On

Posted by A.J.S. Rayl on 2006/01/31 11:00 CST

As the Mars Exploration Rover mission presses onward into its third Earth year -- and second Mars year -- the twin robot field geologists are moving to new destinations.

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Mars Exploration Rovers Update: Spirit Descends Husband Hill as Opportunity Works at a Standstill on Olympia

Posted by A.J.S. Rayl on 2005/12/30 11:00 CST

The Mars Exploration Rovers have each completed their first Mars Year (687 Earth days) and are close to completing their second Earth year exploring their respective sites on the Red Planet. With both Spirit and Opportunity finding new variations of bedrock in the areas they are exploring, the mission is continuing to send the team holiday gifts in the form of intriguing discoveries.

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A debate in Meridiani Planum

Posted by Emily Lakdawalla on 2005/12/24 08:30 CST

There was a big news splash about two articles that appeared in Nature about Mars Exploration Rover Opportunity's landing site. The articles suggest two theories for the formation of the layered sulfur-rich deposits at Meridiani Planum that do not involve standing liquid water.

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Mars Exploration Rovers Update: Spirit Achieves Martian Year Milestone while Opportunity Reveals Harsh Challenges for Past Martian Life

Posted by A.J.S. Rayl on 2005/11/30 11:00 CST

In its orbit around the Sun, the Red Planet has been returning to where it was when the Mars Exploration Rovers first landed back in January 2004, and, as the twin robot field geologists are marking the milestone of their first Martian year -- equivalent to almost two Earth years -- fireworks are flashing all around the planet. Although the cause of the fireworks is actually debris from Halley's comet, through which Mars is currently passing, the timing seems so metaphorically appropriate.

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Mars Exploration Rovers Update: As Mars Orbits Nearer to Earth, Spirit and Opportunity Rove Onward into New Territories

Posted by A.J.S. Rayl on 2005/10/27 12:00 CDT

The Mars Exploration Rovers science team witnessed a bit of an expansion down here on Earth this month, while up on the Red Planet Spirit and Opportunity continued roving along. As Halloween nears, the twin robot geologists have put in another solid month's worth of work, overcoming every occasional "hiccup." At this point, as Mars' orbit brings it as close to Earth as it will get until the summer of 2018, both Spirit and Opportunity are moving into new territories at their respective inspection sites.

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An opportunity for Spirit to see Earth and Venus together?

Posted by Emily Lakdawalla on 2005/09/26 08:16 CDT

I received the following question by email last week: "Do you know if the Mars rovers team has any plans to photograph Venus and Earth together in the evening sky from either rover site? They will be closest together around Sept. 29th."

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Mars Exploration Rovers Update: Spirit Revels in Science at Husband Hill Summit as Opportunity Closes in on Erebus Crater

Posted by A.J.S. Rayl on 2005/09/22 12:00 CDT

Despite a few unexpected bumps and curves in their explorations at Gusev Crater and Meridiani Planum, the Mars Exploration Rovers have been working away and both Spirit and Opportunity have put in a very productive month's worth of work on the Red Planet.

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Mars Exploration Rovers Update: Spirit Returns (Most of) Panorama from Summit of Husband Hill

Posted by A.J.S. Rayl on 2005/09/01 12:00 CDT

Spirit has returned enough pictures from the summit [summit #1] of Husband Hill for the Mars Exploration Team to have put together a 240-degree color panorama of her view, which they released at a news conference today, held at NASA headquarters in Washington D.C. In coming days, the rover will return the rest of the images to complete the full, 360-degree, color panorama.

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Mars Exploration Rovers Update: Spirit Rocks Independence as Opportunity Celebrates With Road Trip

Posted by A.J.S. Rayl on 2005/06/30 12:00 CDT

The Mars Exploration Rovers are still going strong, and both robot field geologists will be working through the July 4th holiday.

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Mars Exploration Rovers Update: Opportunity Roves Out of Sand Dune as Spirit Uncovers Clues of Past Explosions

Posted by A.J.S. Rayl on 2005/06/05 12:00 CDT

Nearly a year and a half after landing on the Red Planet, the Mars Exploration Rovers are continuing to collect important science and impress the team with their resiliency.

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Mars Exploration Rovers Update: Spirit Investigates New Outcrop Methuselah as Opportunity Roves into a Ripple and Gets Stuck

Posted by A.J.S. Rayl on 2005/04/28 12:00 CDT

The Mars Exploration Rovers have both encountered some truly challenging obstacles in recent days, but have also presented the team with some surprises, and continue to be in overall good health some 16 months after bouncing to a landing, and more than a year after completing their primary missions.

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Mars Exploration Rovers Update: Spirit 'Snaps' Dust-Devils while Opportunity Roves on to Viking (the Crater)

Posted by A.J.S. Rayl on 2005/03/25 11:00 CST

After more than a year of active-duty research, the Mars Exploration Rovers have caught 'second winds' -- in part because of their new, recently uploaded software and, in part -- however strange it may seem -- from the planet's notorious dust devils.

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Mars Exploration Rovers Update: NASA/JPL Team Celebrates Rovers' First Year on Mars as Spirit and Opportunity Return

Posted by A.J.S. Rayl on 2005/01/05 11:00 CST

As Spirit rang in her new year at Gusev Crater on Mars Monday, NASA officials and mission team members celebrated the Mars Exploration Rovers first anniversary at an event that featured a press conference, storytelling session, and birthday party at the Jet Propulsion Laboratory (JPL).

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Mars Exploration Rovers Update: Spirit and Opportunity Celebrate Christmas by Working

Posted by A.J.S. Rayl on 2004/12/21 11:00 CST

The Mars Exploration Rovers are trudging ever onward through the dead of winter on the Red Planet dreaming, perhaps, if robots dream, of a white Christmas. But Spirit and Opportunity are robots after all and come this weekend "the poor little rovers will have to keep working, even on Christmas," MER Project Scientist Joy Crisp, of the Jet Propulsion Laboratory (JPL), told The Planetary Society earlier today.

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Mars Exploration Rovers Update: Spirit Climbs up Husband Hill as Opportunity Returns to Karatepe to Exit Endurance Crater

Posted by A.J.S. Rayl on 2004/12/09 11:00 CST

The Mars Exploration Rovers are roving ever on into new territories and deeper into the history books as they close in on the end of one full Earth year of active duty at their respective sites on Red Planet.

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Mars Exploration Rovers Update: Spirit Climbs toward Uchben Opportunity Picks up Power while at Wopmay

Posted by A.J.S. Rayl on 2004/10/22 12:00 CDT

As winter gives way to spring on the Red Planet, the Mars Explorations Rovers are maintaining their 5-day a week work schedules and continuing to send surprises home to Earth. Despite a recurring 'ache' in one of her steering motors, Spirit is continuing her climb in the Columbia Hills toward a rock called Uchben, while her twin, Opportunity, is completing her work at Wopmay.

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