The word “planet” comes from the Greek word planetai , which means “wanderers.”

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In ancient Greek astronomy, the planets were called asteres planetai , or “wandering stars,” because they moved across the sky relative to the fixed background of stars. Over time, the term planetai (“wanderers”) gave rise to our modern word “planet,” keeping that original sense of objects that roam the heavens rather than staying fixed in place.

In short: the word planet comes from the Greek word planetai, which means “wanderers.”

TL;DR: The word planet comes from the Greek planetai , meaning “wanderers,” referring to how planets appear to drift through the night sky compared to the fixed stars.

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