An astronomical unit (abbreviated au) was a unit of length on the interplanetary scale, roughly equal to the (average) distance between Earth and Sol. One astronomical unit was equal to 150 million kilometers, or approximately 93 million miles.

Comparative list of length

In the original version of the film, V'ger's cloud was actually 82 au across. At their farthest point from each other (the aphelion), Earth and Pluto are just over 49 au apart. This would have made V'Ger's cloud almost twice that length, engulfing over half the solar system. As a result, the cloud size was toned down to a more reasonable number in the 2001 director's edition but even then, 2 au, the diameter of the Earth's orbit, is still an enormous size.

A map of the Talosian system

  • The map of the inner system of the Talos system depicted the distance from the binary stars on a line. At every ten intervals, there was a mark which represented one astronomical unit. The map showed that the inner system reached 3.4 au. (TOS: "The Cage")

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