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Today in History: Voyager 2 Confirms Neptune’s Rings on Close Flyby

8/25/2026

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Summary

Story summary

On August 25 1989, NASA’s Voyager 2 flew within 4,800 km of Neptune, capturing the first clear images of the planet’s faint ring system. The flyby confirmed rings first hinted at by a 1984 stellar occultation and marked the only spacecraft visit to an ice giant, expanding knowledge of outer-planet dynamics.

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Story summary

On August 25 1989, NASA’s Voyager 2 flew within 4,800 km of Neptune, capturing the first clear images of the planet’s faint ring system. The flyby confirmed rings first hinted at by a 1984 stellar occultation and marked the only spacecraft visit to an ice giant, expanding knowledge of outer-planet dynamics.