On Sat, 4 Jun 2011 12:07:23 -0700 (PDT), the following
appeared in sci.skeptic, posted by Brad Guth
:

On Jun 4, 11:40*am, Bob Casanova wrote:

On Fri, 03 Jun 2011 18:23:12 -0700, the following appeared
in sci.skeptic, posted by John Smith :

snip

...we will never know how radio waves (or any other waves, for
that matter) transverse and are propagated by the ether though space.

EM radiation doesn't require a propagation medium.

What's the all-inclusive population or average photon density per
given km3 of ISM, or better to know that of the IGM? (I'm talking of
accounting for everything from at least EIR/ELF [1km] to those
extremely hard Gamma of .001 nm)

Damfino, but Google is Your Friend.

And what's the relevance?
--

Bob C.

"Evidence confirming an observation is
evidence that the observation is wrong."
- McNameless