NASA <b>Humanity's Farthest Journey</b> program - Science Update sheet on the <a href="https://en.wikipedia.org/wiki/en:Voyager_program" class="extiw" title="w:en:Voyager program">Voyager Spacecraft</a>
NASA; edited by <a href="//commons.wikimedia.org/wiki/User:Jaybear" title="User:Jaybear">Jaybear</a>
<a rel="nofollow" class="external text" href="http://www.nasa.gov/mission_pages/sunearth/news/Voyager-042811.html">Voyager: Humanity’s Farthest Journey</a>