Re: Davoud's latest topic got me thinking

Martin R. Howell wrote:
Davoud asked, "Where Does Light Come From?" The most basic and "catch all"
answer I can think of is this: It comes from matter (thanks Albert
Einstein?).

Warning. . .here comes a segue!

The nearly infinitesimal larger part of the universe would seem void of any
appreciable light, save for perhaps extremely distant and faint galaxies
here and there. The vastness of the distances between stars in a galaxy is
dwarfed by the distances between the galaxies themselves. . .and visible
light to our eyes -- the light necessary to read a newspaper -- is relative
to the matter, and proximity to that matter, within a galaxy.


Never thought of that. If you could look up out of one of Bruce Dern's biodomes (remember "Silent Running"?), with the lights off, halfway between the Milky Way and M31, what could you see? Milky Way, M31, M81, M33. Maybe Ms 32, 110, LMC and SMC? Pretty dark!


Shawn
.

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