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Mars Exploration Rovers Update: Reality Bites but Opportunity Climbs to "Treasure Trove"

A.J.S. Rayl • December 03, 2015

Opportunity faced the challenges of winter as well as technological issues in November, but pressed on, hiking up hill and into a geological treasure trove that may well present the scientists with the evidence they need to solve the clay mineral mystery of Marathon Valley.

A Day in the Solar System: 28 October 2015

Bill Dunford • November 09, 2015 • 5

On October 28th, the Cassini spacecraft flew through the geyser plume of Saturn's moon Enceladus. But Cassini was not the only spacecraft operating in the solar system that day.

Mars Exploration Rovers Update: Opportunity Hits Winter Slopes at Marathon Valley

A.J.S. Rayl • November 04, 2015

Opportunity hit the slopes of her seventh winter haven on the south side of Marathon Valley in October as the mission entered the 130th month of what was initially slated to be a 90-day tour.

A Roundup of Dust Devil Research

Ralph Lorenz • November 02, 2015

Planetary scientist Ralph Lorenz briefs us on the current state of our knowledge on dust devils on Earth and Mars.

Why Return to the Columbia Hills?

Alex Longo • October 23, 2015 • 10

Where should NASA’s next Mars rover, the Mars 2020 sample caching mission, land? One site under consideration is Spirit's old stomping ground, the Columbia Hills.

Zero Dollars for 2016: Two Stalwart Planetary Missions Face a Troubling Future

Casey Dreier • October 19, 2015 • 7

In its 2016 budget request, the White House inexplicably proposed to end two active, scientifically productive planetary missions: the Mars Exploration Rover Opportunity and the Lunar Reconnaissance Orbiter.

Mars Exploration Rovers Update: Opportunity Rocks on Ancient Water During Walkabout

A.J.S. Rayl • October 02, 2015 • 1

Opportunity continued her walkabout around Marathon Valley in September and sent home more evidence of significant water alteration and, perhaps, an ancient environment inviting enough for the emergence of life.

Mars Exploration Rovers Update: Opportunity Digs Marathon Valley Walkabout

A.J.S. Rayl • September 03, 2015

Opportunity drove farther into Marathon Valley in August, dug into what appears to be a water-altered rock, and took a lot of picture postcards in what is turning out to be a distinctively different site from any that the mission has found since the robot field geologist landed in 2004.

Field Report from Mars: Sol 4119 - August 26, 2015

Larry Crumpler • August 26, 2015

Opportunity is moving down into a large valley that cuts through the rim of Endeavour crater, into some interesting scenery.

What's up in solar system exploration: August 2015 edition

Emily Lakdawalla • August 10, 2015 • 5

I'm back from two weeks' vacation, so it's time to catch up on the status of all our intrepid planetary missions, from Akatsuki to the Voyagers and hitting the Moon, Mars, asteroids, comets, and Saturn in between.

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