1. Rings Found Inside a Martian Crater Reveal the Crater's Ancient History  Optic Flux
  2. This Stupendous Crater on Mars Looks Eerily Like a Tree Stump  ScienceAlert
  3. Crater Tree Rings: Incredible Birds-Eye View Into an Ice-Rich Impact Crater on Mars  SciTechDaily
  4. Rings Inside a Martian Crater Reveal its Ancient History  Universe Today
  5. Giant 'tree stump' impact crater spotted on Mars  Livescience.com
  6. View Full coverage on Google News

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