The Strangest Object Discovered on Mars

The Opportunity Rover made a significant discovery on Mars, finding evidence of a past ocean through a hydrated rock named Esperance. Despite challenges like low energy and technical issues, Opportunity continued its mission, traveling to Salander Point and encountering the mystery of Pinnacle Island. The Rover also witnessed the close flyby of Comet Siding Spring, which temporarily disrupted Mars' magnetic field. As 2015 approached, Opportunity was heading towards Marathon Valley, marking another milestone in its journey.

What was the role of the Mars Reconnaissance Orbiter during the Opportunity Rover's mission?

How did the Opportunity Rover's arm mobility change over time?

What preparations were made by mission controllers in anticipation of Comet Siding Spring's flyby?

Describe the effect of Comet Siding Spring on Mars' magnetic field.