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Martian Gullies Formed by Exploding CO2 Ice Blocks

10/15/2025

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Story summary
  • Dr. Lonneke Roelofs of Utrecht University shows CO2 blocks carve gullies on Martian dunes.
  • In a Mars chamber in Milton Keynes, Roelofs observes CO2 ice blocks slide and explode as they sublimate.
  • The blocks carve deep channels, revealing a mechanism for gully formation during winter conditions.
  • Roelofs' findings could provide insights into similar Earth processes.