In the 1970s, images from ... Zhurong found a beach. The Noachian period of Martian history, from 4.1 to 3.7 billion years ago, is the poster child for a wet Mars. There is abundant evidence ...
In the 1970s, images from the NASA Mariner ... Zhurong found a beach. The Noachian period of Martian history from 4.1 to 3.7 billion years ago is the poster child for a wet Mars. There is abundant ...
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