For the vast majority of the panorama, Opportunity utilized three filters to capture full-color images. But in the bottom left, you may notice a few frames are still in black and white. This is the result of the massive storm that ultimately took Opportunity out of commission last year. As the storm swept in, the solar panels that power Opportunity were covered in dust. This meant that the rover did not have enough juice remaining to capture its final few images using the Pancam's green and violet filters.

Despite the fact that Opportunity is clearly not a living creature, its official demise last month sent ripples of sadness echoing through the astronomical community. However, according to Tanya Harrison, Director of Research for the "NewSpace" Initiative at ASU and Science Team Collaborator on the Mars Exploration Rover (MER) Opportunity, the rover's tireless efforts to explore the Red Planet will not soon be forgotten.