NASA's Perseverance rover found strange green spots in Martian rock, potentially indicating a past interaction with liquid water.
NASA's Perseverance rover has found a rock with strange green spots in it (seen at upper left), and it may hold clues about past water. NASA's Perseverance rover is approaching four years of activity on the Martian surface — and all this time, the rover has been exploring ancient environments, collecting samples, and investigating whether our reddish neighbor may have once supported microbial life In its latest findings , Perseverance took a nighttime mosaic image of the Malgosa Crest abrasion patch, at a location called the "Serpentine Rapids," using its SHERLOC WATSON camera. The image revealed white, black and, surprisingly, green-ish spots within the rock. While these rocks' composition remains a mystery, the unexpected find has scientists excited about what other hidden gems Perseverance might stumble across going forward. To acquire images from within the rock, Perseverance made an abrasion patch in a rock outcrop named "Wallace Butte." The abrasion patch measured five centimeters (roughly two inches) in…