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  "path": "/astronomy/mars/scientists-found-a-bathtub-ring-on-mars-could-it-be-evidence-of-an-ancient-red-planet-ocean",
  "publishedAt": "2026-04-20T18:03:23.000Z",
  "site": "https://www.space.com",
  "tags": [
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  "textContent": "A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the Red Planet.",
  "title": "Scientists found a 'bathtub ring' on Mars. Could it be evidence of an ancient Red Planet ocean?"
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