NASA's Perseverance was at a location named “Lac de Charmes" (Lake of Charms) when it captured its latest self-portrait. Lake of Charmes, or Lake Charmes, is a reservoir in France. It's a nickname, based on the fact that the rover is exploring an ancient paleolake. By informal convention, the rover team names locations and features by themes, and lakes and waterways are the theme. The Lac de Charmes region sits just to the west of Jezero Crater's rim. The area contains some of the most scientifically interesting features Perseverance has explored. It may contain the oldest rocks the rover will encounter, and also contains megabreccia . Megabreccia are massive fragments of rock, and these ones were launched into the air by an ancient massive meteorite impact on Isidis Planitia 3.9 billion years ago. Perseverance had just finished abrading and analyzing the rocky outcrop in the image, named Arathusa, when it captured this composite selfie.…