Definition: The term "Archean" comes from a Greek word, which means "ancient," and it refers to the time period between Earth's birth and death, which spans about 5 billion years. It was named by ancient astronomers based on observations they made at the time, marking a significant transition in our solar system. The term "Archean" is often used as a descriptor of geological or historical events, emphasizing its importance in understanding Earth's early formation, evolution, and development into what we know today.
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