Re: tech: metagalactic GPS

From: Yiannis Tsapras (yt2@st-andrews.ac.uk)
Date: Wed Jun 09 1999 - 00:57:19 MDT


Microwave anisotropies do not change over time.

On Tue, 8 Jun 1999, Eugene Leitl wrote:

>
> Spatial inhomogenities in the microwave background could be useful for
> ultra-deep-space navigation. Unfortunately, I have no idea how they
> change over long periods of time. Also, the observed Doppler shift (one
> hemisphere bluer, one redder) due to own movement gives one a global
> frame of reference for speed of travel.
>
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