Quote:The rover's work has been extremely intriguing to astrobiologists, showing that Gale was indeed a habitable environment long ago: The area hosted a long-lived lake-and-stream system that had the ingredients for life, as well as a possible chemical energy source that could support microbial metabolism.

MRO has been operating at the Red Planet even longer than Curiosity, reaching Mars orbit in March 2006. As the new photo shows, MRO is still going strong, hunting for signs of past water activity on the Red Planet, serving as a communications relay for surface craft like Curiosity and its younger cousin, Perseverance — and keeping tabs on these robots' movements from time to time as well.
https://www.space.com/space-exploration/mars-rovers/mars-orbiter-snaps-1st-image-of-curiosity-rover-driving-on-the-red-planet-photo