On Feb 11, 12:29*pm, "Painius" wrote:
"BradGuth" wrote in message

...

On Feb 3, 12:55 am, "Painius" wrote:

. . .
IOW, does the darkness travel at the same speed as the
light? or does it reach us instantly?

Two kinds of dark:

a) near IR dark (photons invisible to the human eye)

b) BH or electron dark (gravity that causes other substances to emit
photons)

*~ BG

I was wondering if anybody would begin coming up with
the fact that the "speed of dark" is very real when one
considers the IR, the UV, and indeed every frequency of
EM radiation outside the visual spectrum.

The mystique (for me) comes when i consider that even
the dark parts of the night sky, the parts between the
stars and other light sources, are chock full of light that
we will never see--because it is going in other directions.
It will never get to our eyes. *Only the light that comes
directly at us can be seen.

And these dark areas range from right above us to the
distances of those faraway galaxies seen only in the UDF,
the "ultra-deep field". *And my weird mind is asking the
more sane part of me, "Does it take the same amount of
time for the darkness that surrounds those UDF galaxies
to reach us as it does the light that's emitted from the
galaxies themselves?"

Oy. *g

I suppose when one considers space to be comprised of
a special kind of energy, then this actually might be a
valid question?

happy days and...
* *starry starry nights!

--
Indelibly yours,
Paine Ellsworth


Paine, when I stand outside at night and the sky clears, I could swear
that the cold of space is pressing down upon me. I know it's IR
escaping from the Eath into space that makes things get colder, but it
seems more intuitive to think of it as some agent of cold that is
hitting me from space!

Double-A