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Today in History: John Tebbutt discovers Great Comet of 1861

5/13/2025

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Summary

Story summary

On May 13, 1861, Australian astronomer John Tebbutt discovered the Great Comet of 1861, a significant long-period comet visible to the naked eye for about three months. This comet, classified among the eight greatest of the 19th century, later became notable as the Earth passed through its tail later that year.

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Story summary

On May 13, 1861, Australian astronomer John Tebbutt discovered the Great Comet of 1861, a significant long-period comet visible to the naked eye for about three months. This comet, classified among the eight greatest of the 19th century, later became notable as the Earth passed through its tail later that year.