To commemorate 5000 sols on the Red Planet, the Opportunity rover snapped a selfie. Meanwhile, the Curiosity rover spotted strange features that may be leftovers from an ancient lake. Also, updates on the InSight and Mars 2020 missions.
Opportunity Rover Celebrates 5000 sols: https://www.space.com/39728-mars-rover-opportunity-5000-martian-days.html
Did Crystals from Ancient Lakes on Mars Form These Tiny, Weird Things?: https://www.space.com/39687-ancient-mars-lakes-made-weird-crystal-features.html