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  "publishedAt": "2026-05-14T00:22:29.000Z",
  "site": "https://science.nasa.gov",
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  "textContent": "Grades K-2 or Adult Naive Learner Grades 3-5 or Adult Emerging Learner Grades 6-8 or Adult Building Learner Grades 9-12 or Adult Sophisticated Learner\n\nThe post How did the first cells arise? appeared first on NASA Science.",
  "title": "How did the first cells arise?"
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