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Today in History: Comet Hale-Bopp Makes Closest Approach to Earth

3/22/2026

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Summary

Story summary

On March 22, 1997, Comet Hale–Bopp made its closest approach to Earth, coming within 1.315 astronomical units. This long-period comet became one of the most observed and brightest comets of the 20th century, captivating skywatchers worldwide and providing a spectacular celestial display.

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Story summary

On March 22, 1997, Comet Hale–Bopp made its closest approach to Earth, coming within 1.315 astronomical units. This long-period comet became one of the most observed and brightest comets of the 20th century, captivating skywatchers worldwide and providing a spectacular celestial display.