- Perseverance Drills Main River Rock Sample astrobiology.com
- Shocking Spherules on Mars: NASA’s Perseverance Rover Finds a Rock That Defies Explanation SciTechDaily
- NASA’s Perseverance Mars Rover Studies Trove of Rocks on Crater Rim NASA (.gov)
- Strange spherules discovered on Mars by NASA’s Perseverance rover – but what do they mean? MSN
- Are we alone in the universe? These Mars rocks could finally give us an answer. National Geographic
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