Quote:
Originally Posted by xelasnave
My observational evidence ... If galaxies were not in a push environment they would simply fly apart and I think others call that energy "dark energy" but upon my understanding that view is accepted..well its not my view that is accepted it is the view put forward on dark energy ..or so I believe.
I think the Corona of the Sun is produced from the interaction off the outflow of the Sun meeting the flow coming in ... it couls explain where all the energy comes from that makes the Corona hotter.. Bojan did say why this wont work but I cant recall why the idea was a dude..but I think it sounds reasonable..at least I offer where the extra energy comes from ...
I think the border we call the heliosphere may well be similar.. the energy out is met again with energy coming in...and you have to stand well back to see this but drawings along the lines suggested may offer the idea up better than I can in text.
I feel the fault is mine is describing things.
alex
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Why would they fly apart?? Just because there's a factor called "dark energy" that is imparting an acceleration effect to spacetime doesn't mean that without a "push" effect they'll scream off into the wide blue yonder. Gravity, as explained perfectly well by Newton and Einstein, does the job nicely and fits (nearly) all the observational evidence that we have. Sure, there are some anomalies with aspects of how gravity works in relation to accelerated motions in the outer reaches of spiral galaxies (and possibly in the case of the Pioneer probes, yet there's been nothing w.r.t. the Voyagers)...and this is where MOND is being proposed...but whether it holds itself will be up to careful observation and theoretical deliberation.
The corona of the Sun is heated by the interactions of magnetic fields with the gases present in the corona. The magnetic fields get twisted by the Sun's differential rotation and the ionised gases in the corona generating their own fields. The magnetic fields reach a point of maximum PE and twisting, then they snap back into their low energy states...the energy thereby being released into the gas and heating it up. There's little or no dampening effect by the gases of the corona on the magnetic fields as the corona gas is exceptionally rarified. That's why it heats up so dramatically.