SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/aero-voyager1-interstellar

In what year did Voyager 1 cross into interstellar space?

2012, the first spacecraft to get there.

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  1. 1989
  2. 2012 ✔
  3. 2018

Why: Voyager 1 reached the edge of the Sun's bubble and entered interstellar space in 2012. Its twin, Voyager 2, followed in 2018.

Huh, didn't know that: Voyager 2 took longer because it travels slower and in a different direction.

The dad joke
Why did Voyager 1 leave the solar system? It needed some space.
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References

Answer: 2012. Voyager 1 reached the edge of the Sun's bubble and entered interstellar space in 2012. Its twin, Voyager 2, followed in 2018.

  1. NASA Science, Voyager science.nasa.gov/mission/voyager
    Voyager 1 reached the interstellar boundary in 2012.
    Checked 2026-10-10.

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