The Hadean eon, spanning from about 4.6 to 4 billion years ago, is characterized by a tumultuous and inhospitable environment. The Earth was still forming, with intense volcanic activity, a molten surface, and frequent asteroid impacts. The atmosphere was likely thick with water vapor, carbon dioxide, and other gases, but lacked free oxygen. This chaotic landscape eventually set the stage for the development of the first solid crust and the emergence of liquid water, leading into the Archean eon.
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