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  "path": "/astronomy/earth/snowball-earths-liquid-seas-dipped-way-below-freezing",
  "publishedAt": "2026-03-01T16:00:00.000Z",
  "site": "https://www.space.com",
  "tags": [
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  "textContent": "Iron isotopes show that salty seawater pockets beneath the ice were as cold as −15°C.",
  "title": "Snowball Earth's liquid seas dipped way below freezing",
  "updatedAt": "2026-02-27T17:13:38.000Z"
}