Re: Dark matter/energy - is it real?


"Wayne Throop" <throopw@xxxxxxxxx> wrote in message
news:1144116248@xxxxxxxxxxxx

: Except that we could see that energy was disappearing. Dark matter
claims
: that 90% of the universe is missing, yet we do not see any physical
process
: missing in our experiments.

Of course there is.


No, there isn't. If you want to claim dark matter, then it can't be created
by any physical process we know about, which leaves it a relic of the
creation of the universe. Our theories don't have gaps large enough to
contain it.




The physical process that causes the centripetal
acceleration we see but can't account for. It's missing. There has to
be one, else conservation of momentum etc is all wrong.


There being something doesn't mean that something is dark matter. A much
simpler solution is that our theories of gravity are simply wrong.

It could also be an artifact of other known forces- I have seen at least one
article that claimed the effect was due to large scale electromagnetic
effects. The researcher managed to produce galaxy like obejects in plasma
with only electromagnetic forces. Or it could be the cumulation of a number
of small individual pieces that collectively explain the whole.

A very small net positive charge on the pioneer probes and a very small net
negative charge on the Sun (or vice versa) could potentially explain the
pioneer anomaly without any new physics or invisible exotic new forms of
matter that supposedly make up 90% of the universe. I'm certain a not
excessively large electromagnetic effect on galaxies could explain their
behavior as well.





Your solution, your guess as to what this physical process is: "gravity
isn't the physical process we think it is".


Exactly.



Which could have worked
for neutrinos also: the various physical processes that cause charged
particles to leave cloud tracks, or our calculation of the masses of
the particles involved, could simply have been wrong. Just like our
calculations as to what gravity predicts could be wrong. But "there's
some missing energy" was a good guess for neutrinos, and it's just as
justified now for gravity as it was then for weak nuclear decay.


Except there is no missing energy here. We don't have energy disappearing
into never-never land every time we do an experiment.




Your solution is "throw the gravity out with the bathwater".


Gravity is the bathwater. It's a theory that doesn't work. You seem to
want to save it at the expense of other theories that *do* work, and break
them. Easier all around to simply break gravity.




In using the kinetic theory of gases to calculate the speed of sound,
there was for quite some time a small discrepancy with the measured
speed. Eventually, this was discovered to be because of finite particle
size and inter-particle forces which weren't accounted for earlier.
It would have been a pity to throw out the kinetic theory with the sound
propogation bathwater, because it was basically pretty much correct.


Dark matter supposedly makes up 90% of the universe, this isn't a small
discrepancy.


.

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