The Mars Exploration Rovers Update Archives

A comprehensive accounting of the Spirit and Opportunity rovers

From 2004 to 2019, journalist A.J.S. Rayl followed the adventures of the Mars Exploration Rovers Spirit and Opportunity for The Planetary Society. Her exclusive coverage is archived here. For an overview of the mission itself, visit our Mars Exploration Rovers mission page.

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.

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Special Feature

In Memoriam

A tribute to members of the Mars Explorations Rovers team who passed away during the mission.