Did NASA find a mysterious doorway on Mars? No, but that's no reason to stop looking - The Conversation

A photo of ‘doorway’ on Mars shows how ready our minds are to see significance and signs of life in the natural world.

For the past ten years, NASAs Curiosity rover has been trundling around the surface of Mars, taking photos in its quest to understand the history and geology of the red planet and perhaps even find s… [+4556 chars]

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