Schwede66 · Image source · CC BY-SA 4.0

wheeled · retired

Opportunity

NASA / Jet Propulsion Laboratory · United States · 2003

Solar-powered NASA Mars rover that far outlived its planned mission and found evidence of ancient water at Meridiani Planum.

Specifications

1. [1]NASA PDS Analyst's Notebook — MER Instrument Host · third party · retrieved 2026-08-14“In its deployed configuration with the Pancam Mast Assembly (PMA) deployed, the rover is 154 cm tall.”
2. [2]NASA Science — Opportunity · manufacturer · retrieved 2026-08-14“seven times heavier (408 pounds or 185 kilograms) than the Sojourner rover”
3. [3]NASA PDS Analyst's Notebook — MER Instrument Host · third party · retrieved 2026-08-14“The five degree-of-freedom robotic arm positioned the following devices on rocks and soils for in-situ analysis.”
4. [4]NASA PDS Analyst's Notebook — MER Instrument Host · third party · retrieved 2026-08-14“When moving on flat terrain, the vehicle could achieve a top speed of 5 cm/s.”

Specifications drift. Each retrieval date is shown so a stale number is visibly stale rather than quietly wrong.