New Perseverance images reveal green-hued spots within the red Martian rock 

 NASA's Perseverance rover found strange green spots in Martian rock, potentially indicating a past interaction with liquid water.  

https://cdn.mos.cms.futurecdn.net/3eUTpJ3tHHPnbvsfyG8rxm.jpg

https://www.space.com/space-exploration/mars-rovers/new-perseverance-images-reveal-green-hued-spots-within-the-red-martian-rock