First Spacecraft to Enter Interstellar Space

Voyager 1 became the first human-made object to enter interstellar space on August 25, 2012, followed by Voyager 2 on November 5, 2018.

Sources

• science.nasa.gov
• Voyager 1 and 2 Probes: Humanity's Interstellar Ambassadors - Astrography
• Voyager 1 | Definition, Data, Golden Record, & Facts | Britannica
• Voyager 1: First man-made object to cross into interstellar space | collectSPACE
• earthsky.org

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