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Today in History: Voyager 1 Becomes First Man-Made Interstellar Explorer

8/25/2026

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Summary

Story summary

On 25 August, NASA confirmed Voyager 1, launched on 5 September 1977, crossed the heliopause and entered interstellar space, becoming the first human-made object to leave the Sun’s protective bubble. Now over 170 AU from Earth, the probe continues sending data via the Deep Space Network, expanding humanity’s reach into the galaxy.

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Story summary

On 25 August, NASA confirmed Voyager 1, launched on 5 September 1977, crossed the heliopause and entered interstellar space, becoming the first human-made object to leave the Sun’s protective bubble. Now over 170 AU from Earth, the probe continues sending data via the Deep Space Network, expanding humanity’s reach into the galaxy.