NASAJPL
@qzbarslomyrn
Jezero Crater's rim is a treasure trove of rocks! Since January, @NASAPersevere has collected 3 samples, including a rock that's possibly 3.9 billion years old, one that shows signs of ancient water, and one with markings the team has never seen before. https://t.co/jsojxXQMn3 https://t.co/BDNAtHeFDe
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