Voyager 1 has reached interstellar space

@article{Cowen2013Voyager1H,
  title={Voyager 1 has reached interstellar space},
  author={Ron Cowen},
  journal={Nature},
  year={2013}
}
  • R. Cowen
  • Published 12 September 2013
  • Physics
  • Nature
High electron densities show the craft left the Sun's bubble of influence in 2012.