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SESK: Stuff Everyone Should Know · sesk.info/aero-voyager-1-interstellar-2012

Which spacecraft became the first human-made object to reach interstellar space?

Voyager 1, which crossed over in August 2012.

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  1. Pioneer 10
  2. Voyager 1 ✔
  3. New Horizons

Why: Voyager 1 launched in 1977 to visit Jupiter and Saturn, then kept going. In August 2012 it passed the heliopause, the edge of the Sun's particle-and-magnetic-field bubble, into interstellar space.

Huh, didn't know that: Its twin, Voyager 2, followed it into interstellar space later.

The dad joke
Voyager 1 is the ultimate road tripper. It never once asked, are we there yet?
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References

Answer: Voyager 1. Voyager 1 launched in 1977 to visit Jupiter and Saturn, then kept going. In August 2012 it passed the heliopause, the edge of the Sun's particle-and-magnetic-field bubble, into interstellar space.

  1. NASA Science, Voyager 1 science.nasa.gov/mission/voyager/voyager-1
    Voyager 1 is the first human-made object to venture into interstellar space.
    Checked 2026-10-10.

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