Noachian

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

The Noachian is a geologic system and early time period on the planet Mars characterized by high rates of meteorite and asteroid impacts and the possible presence of abundant surface water.

Excerpt from the Wikipedia article “Noachian”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: NASA/Arizona State University, GFDL, via Wikimedia Commons.