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Ismenia Fossae: Craters or Pits? | NASA Image | Cosmos Observatory | Cosmos Observatory

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Ismenia Fossae: Craters or Pits?

Ismenia Fossae: Craters or Pits?

The circular depressions prevalent throughout this scene from NASA Mars Odyssey at first glance appear to be craters, but are they? Could they be pits formed by devolatilization? It is not clear. Scientists are studying these features in search of answe

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