Re: [GZG] AUs, Gravity wells and FTL

On Sun, Aug 07, 2005 at 05:31:49PM +1200, David Billinghurst wrote:

>A dumb question - I recall that an AU, or Astronomical Unit, is the
radius
>of Earth orbit, eg approx 93 million miles.  Is this AU still approx 93
>million miles if used as a measure in another stellar system?

Yes - it's a Terra-centric measurement standard, just as much as the
metre or the second. A truly generic measurement system would probably
be based on the Planck length.

R
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