Join Donate

The Mars Exploration Rovers Update

Since 2004, original interviews, original reporting, and the only regularly published news feature documenting NASA’s first overland expedition of the Red Planet through the adventures and discoveries of Opportunity, Spirit, and the MER team, by A.J.S. Rayl.

The Mars Exploration Rovers Update: Opportunity Studies Mystery Rock, Mission Officials Seek 2019 Extension

A.J.S. Rayl • May 04, 2018 • 4

Opportunity spent April further exploring the area about halfway down Perseverance Valley, checking out unusual, vesicular or pitted rocks the likes of which she has never seen, while officials prepared the mission’s bid to keep the robot field geologist roving through 2019.

The Mars Exploration Rovers Update Special Report: Perseverance Science So Far, New View of Endeavour at LPSC 2018

A.J.S. Rayl • April 27, 2018 • 1

For the 15th year in a row, Opportunity drove into the spotlight during an afternoon session at the 49th Lunar & Planetary Science Conference.

The Mars Exploration Rovers Update: Opportunity Presses On in Perseverance, Pace Picks Up

A.J.S. Rayl • April 11, 2018 • 1

In the west rim of Endeavour Crater, Opportunity continued her exploration of Perseverance Valley in March.

The Mars Exploration Rovers Update: Opportunity Logs 5000th Day, Snaps Selfie, and Roves On

A.J.S. Rayl • March 05, 2018 • 3

When Opportunity’s 5000th day dawned in February, it was a meaningful milestone for the team, and it led to a personal first for the veteran robot field geologist that has chalked up so many firsts she’s set the standard for Mars rovers.

The Mars Exploration Rovers Update: Mission Completes 14 Years of Exploring, Opportunity Roves into Year 15!

A.J.S. Rayl • January 31, 2018

In January, Opportunity quietly completed 14 years of surface operations on Mars—the longest-lived robot on another planet.

The Mars Exploration Rovers Update: Opportunity Beats Winter, Wraps 2017, and Heads for 14th Anniversary

A.J.S. Rayl • January 05, 2018

With the Martian winter on the run, Opportunity cruised closer to its 14th anniversary of exploring the Red Planet in December as she deliberated a distinctive “fork in the road” deep in Perseverance Valley and wrapped another record year.

The Mars Exploration Rovers Update: Opportunity Returns Fundamental Finding in Perseverance, Cruises Through Winter Solstice

A.J.S. Rayl • December 01, 2017 • 1

Opportunity continued the historic winter science campaign inside Perseverance Valley and delivered the goods that confirmed an important discovery in November, and then cruised through winter solstice, driving the mission closer to its 14th anniversary of surface operations coming up in January.

The Mars Exploration Rovers Update: Opportunity Pops Wheelies Over Etched Rocks in Perseverance

A.J.S. Rayl • November 02, 2017

As brutally cold got even colder at Endeavour Crater in October, the depths of winter gripped Opportunity, and ‘life’ on Mars slowed. But the robot field geologist continued to work on through the doldrums of the season.

Mars Exploration Rovers Update: Opportunity Braves Onset of Winter to Picture Perseverance

A.J.S. Rayl • October 02, 2017

The Martian winter began to grip Endeavour Crater in September, slowing Opportunity's pace. But she braved the brutal cold in Perseverance Valley and followed her commands to visually document everything in sight.

Mars Exploration Rovers Update: Opportunity Ventures Deeper into Perseverance

A.J.S. Rayl • September 01, 2017

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.

Mars Exploration Rovers Update: Opportunity Enters Perseverance Valley, Settles in for Solar Conjunction

A.J.S. Rayl • August 01, 2017

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.

Our Mars Exploration Rovers (MER) update has recorded the journeys of the twin rovers Spirit and Opportunity on the surface of Mars since their arrival in January of 2004. It is a treasure trove of information, insight, and high-quality reporting detailing every step of this unprecedented voyage of discovery.

Browse by Year

MER
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

Europa
The Planetary Fund

Help advance robotic and human space exploration, defend our planet, and search for life.

Donate

You are here: