of Iowa Press release* NASA's Interstellar Probe (2000)* CNN: NASA: Voyager I enters solar system's final frontier – May 25, 2005* "New Scientist": Voyager 1 reaches the edge of the solar system – May 25, 2005* Surprises from the Edge of the Solar System – Voyager 1 Newest Findings as of September 2006* The heliospheric hydrogen wall and astrospheres* Heliosphere, has a diagram.
* CNN: NASA: Voyager I enters solar system’s final frontier — May 25, 2005* "New Scientist": Voyager 1 reaches the edge of the solar system — May 25, 2005* Surprises from the Edge of the Solar System — Voyager 1 Newest Findings as of September 2006* The heliospheric hydrogen wall and astrospheres* Heliosphere, has a diagram.