Halley Definition
Definition
a cometary visitor to the inner solar system, best known for its predictable return every 76 years or so, named after Edmond Halley, who predicted its next appearance based on previous observations.
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a cometary visitor to the inner solar system, best known for its predictable return every 76 years or so, named after Edmond Halley, who predicted its next appearance based on previous observations.
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