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  "path": "/science-research/astromaterials/nasa-uses-mineralogical-marker-to-understand-ancient-martian-climate/",
  "publishedAt": "2026-05-28T18:22:00.000Z",
  "site": "https://science.nasa.gov",
  "tags": [
    "Ames Research Center",
    "Astromaterials",
    "Curiosity (Rover)",
    "Jet Propulsion Laboratory",
    "Johnson Space Center",
    "Mars",
    "Mars Science Laboratory (MSL)"
  ],
  "textContent": "Scientists analyzed 20 Martian samples collected by NASA’s Curiosity Rover and found that differences in hematite crystallite size at varying elevations could serve as a new mineralogical marker for understanding Mars’ ancient climate.",
  "title": "NASA Uses Mineralogical Marker to Understand Ancient Martian Climate"
}