Accelerating Galaxies

Chronos

To me, it is perfectly reasonable to assume the same causal factors that influence the effects we observe over 9 billion years of the history of the universe remain in effect today - and that is the presumption of mainstream scientists. No one, to my knowledge, has offered any evidence or reason to that expansion has changed in any meaningful way over the past billion years. It's like the energy output of the sun. We know it has been essentially the same on earth for billions of years, so, what basis do we have to suspect it has arbitrarily changed in the last million or so years?

Drakkith

And sometimes they reach the right conclusions. I hope you know enough about the history of science to understand that.

Right back at ya.

And the way I see it is that you have absolutely no basis for judging anything in cosmology at all. What you've done is come into the forums and thrown your own opinion around and then tried to tell us to keep an open mind about that ignorant opinion. We have explained that everything is based on observations and that we don't know everything about dark energy, and yet you try to throw those exact things right back at us. No. No this is unacceptable. You are free to believe whatever you want, but please do not come here and tell us you hope we find "better" explanations in the future simply because you do not like the current ones. The only thing this does is show how close minded you are. I am reporting you and if the mods feel you have broken one of PF's rules then you will be notified. If not, you won't. Have a nice day.

Photon_2013

Drakkith, if you found my post offensive, I take it back. Did not want to offend anyone, just wrote what I was thinking. I had said two times in previous posts I did not want to engage in dark energy debate. You started it. Go back and read my postings. Did I break any forum rules... we will let mods decide. Good day to you too!

mkarger

Dark matter is essentially necessary to explain the orbital characteristics within the Milky Way. This is demonstrated by running calculations on the known orbits of astronomical bodies around another body.

mkarger

Dark matter is simply an interim identifier for some form of matter that is giving mass to certain parts of space where there is no direct observational evidence other than the gravitational effects.

cepheid

This thread (including the posts that you were specifically responding to) is about dark energy, not dark matter. So, you are a little off the mark here. Also, this thread hasn't seen any additional posts from the OP, whose question was thoroughly answered, so I'm locking it.