Voyager series
From Memory Alpha, the free Star Trek reference
The Voyager series of space probes were unmanned spacecraft created by NASA, the space exploration agency of the 20th century Earth nation-state the United States of America, to explore the Sol solar system, especially its outermost regions.
[edit] Voyager 6
Voyager 6 was the sixth of the Voyager series. It was believed to have traveled through a black hole and became the source of the machine planet's V'Ger cloud. (Star Trek: The Motion Picture)
