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...
Drakkith, everybody who works on cutting edge science uses their most advanced instruments and their best models. However they still run into wrong conclusions or reach dead ends. Happens all the time. I hope you know enough about history of science to understand that. So keep an open mind...
cepheid, by "far fetched" I meant my current understanding of physics. I was not referring to everyday experience. I know most of physics is counter intutive. But anyway, since nothing is known about DE, the discussion will not go anywhere. I would certainly hope physicists will come up with...
In fact, there is now an exotic inflationary proposal in which a new ingredient (a new field is introduced, referred to as ‘quintessence’, which would provide an effective cosmological constant through a dynamical ‘dark energy’ of negative pressure. It has been argued that this might be...
Drakkith, please point to some specific source or literature that shows this. I did not see any evidence that DE is required to explain milky way. I thought concept of DE is only required if you try to explain all of known universe.
Thanks for comments.
It seems to me as we develop more and more sophisticated telescopes, we increase our ability to see farther in space which means we can see more in past. Eventually we will get so close to events of big bang, everything will seem bizarre and unknown. I don't think we understand the forces and...
Bandersnatch, thanks. You are absolutely right that we can observer galaxies 9,8,7... billion LY away and draw conclusions. So according to data, about 100 galaxies closest to us show blue shift (means they are coming towards us). Suppose the last red shift galaxy we see is 1 billion LY away...
Thanks Chronos. I am in complete agreement with you about how these calculations are done and how difficult they are. My understanding is that only when they started observing far away galaxies (hubble telescope), they found this expansion is accelerating.
I had emphasized parts of my post...
In Cosmology books and tv programs it is mentioned the galaxies are accelerating and running away from us. My question relates to this observation.
When they are looking through telescope to the edges of visible universe, they find extremely bright supernova or "celestial candles", calculate...