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Stories, updates, insights, and original analysis from The Planetary Society.
Mars Exploration Rovers Update: Opportunity Ventures Deeper into Perseverance
Along the western rim of Endeavour Crater, Opportunity forged onward in August vicariously taking the Mars Exploration Rovers team – along with a global contingent of mission observers all around Earth – downhill into Perseverance Valley and deeper into a new chapter in this legendary expedition of the Red Planet.
A future comes into focus for the Mars Exploration Program
Casey Dreier says NASA's decision to pursue a Mars sample return mission is good news for Mars fans, Mars scientists and supporters of the decadal survey process.
NASA considers kicking Mars sample return into high gear
Thus far, no plan has solidified on how to get soil and rock samples from the upcoming Mars 2020 rover back to Earth. That is starting to change.
Five Earth Years on Mars
Five (Earth) years ago today, the Mars Science Laboratory Curiosity landed in a dramatic fashion on the surface of the Red Planet. We look back at a mission that advanced humanity's understanding of Mars and provided a priceless return on a modest investment.
Mars Exploration Rovers Update: Opportunity Enters Perseverance Valley, Settles in for Solar Conjunction
After struggling to get her left front wheel unstuck in June, Opportunity quickly adapted to a new driving strategy and unabashedly cruised into Perseverance Valley in July.
Congress gives NASA's planetary science division some love (and a Mars orbiter)
The House of Representatives proposed $2.1 billion for NASA's planetary science budget, which would be an all-time high. Part of the increase would be used to start work on a new reconnaissance and communications orbiter.
Field Report from Mars: Sol 4782
With the latest drive on sol 4782, Opportunity began the long drive down the floor of Perseverance Valley here on Endeavour Crater.
Mars Exploration Rovers Update: Opportunity Sprains ‘Ankle’ but Perseveres on Walkabout
The autumn skies over Endeavour Crater remained hazy as dust from the summer storms continued to rain down, but Opportunity encountered some unexpected and serious June gloom when her right front steering wheel jammed during the walkabout atop Perseverance Valley.
Field Report from Mars: Sol 4766
Opportunity is doing a geologic walkabout at the entrance to Perseverance Valley, an ancient and potentially water-carved feature.
Curiosity update, sols 1675-1725: Traverse to Vera Rubin Ridge
Curiosity has had a busy eight weeks, driving south from the Bagnold Dunes toward Vera Rubin Ridge. The path has steepened and the rover is now rapidly climbing upward with every meter traveled. It's been a productive time for arm instruments, but the drill is still not working.
Mars Exploration Rovers Update: Opportunity Shoots the Moon on Arrival at Perseverance Valley
In another dynamic demonstration of what can be achieved when a team works together, Opportunity cruised to the top of Perseverance Valley, shot the moon, and drove into her 160th month of surface operations in May.
Announcing a New Paper on NASA's Mars Exploration Program
NASA’s robotic Mars Exploration Program is on a troubling path of decline—and decisions must be made now in order to stop it. A new report by the Society explains why.
Field Report from Mars: Sol 4734
Opportunity has arrived at the head of Perseverance Valley—a possible water-cut valley.
Geology on Mars: Using stratigraphic columns to tell the story of Gale Crater
Stratigraphic columns are a basic tool in geology, used on both Earth and Mars to tell the story of a location. But what are they really?
Field Report from Mars: Sol 4718
Opportunity has made the final drive in the month-long process that began way up north inside Endeavour Crater earlier this Earth-year.
The Mars Exploration Rovers Update: Opportunity Closes in on Perseverance Valley
Opportunity spent the month of April 2017 outside the western rim of Endeavour Crater, cruising toward Cape Byron and Perseverance Valley, the centerpiece of its tenth extended mission.
Curiosity update, sols 1600-1674: The second Bagnold Dunes campaign
The four-stop dune science campaign offered the engineers some time to continue troubleshooting the drill without any pressure to use it for science. They scooped sand at a site called Ogunquit Beach but couldn't complete the planned sample activity because of new developments in the drill inquiry. The rover has now headed onward toward Vera Rubin Ridge.
Mars Exploration Rovers Update: Opportunity Dodges Dust Storms, Makes Tracks to Perseverance Valley
After wrapping the final science investigations on the slopes of Cape Tribulation, Opportunity climbed up and over the rim of Endeavour Crater in March and embarked on the journey south toward its next science target: Perseverance Valley.
Unraveling a Martian enigma: The hidden rivers of Arabia Terra
Arabia Terra has always been a bit of a martian enigma. Planetary scientist Joel Davis takes us on a tour of its valley networks and their significance in telling the story of water on Mars.
Field Report from Mars: Sol 4669
Opportunity has begun driving down a long southward slope in Endeavour, heading toward Perseverance Valley.



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