Does Dark Energy exist and is the universe really accelerating?

[John Clark]

There is a radical new paper in the December 19 issue of the journal Monthly Notices of the Royal Astronomical Society that claims Dark Energy does not exist and the universe is not accelerating, I don't know if it's right or not but it's certainly interesting. It says recent observation show that the universe is lumpier than previously thought, and clocks run slower in a gravitational field, so a clock in the Milky Way, where there's a lot of matter nearby and thus in a strong gravitational field, would run about 35% slower than a clock that was in one of the larger Cosmic Voids where there is little matter nearby and therefore is in a weak gravitational field. Therefore  for us in the Milky Way it would look like the void was getting larger at an accelerating rate.

David Wiltshire, the leader of the study said  "Our findings show that we do not need dark energy to explain why the universe appears to expand at an accelerating rate. Dark energy is a misidentification of variations in the kinetic energy of expansion, which is not uniform in a universe as lumpy as the one we actually live in."

They call their new idea "the timescape framework", and the paper concludes with this: 

 "The timescape framework is consistent with new analysis of void statistics in numerical relativity simulations using the full Einstein equations. These are consistent with an emerging kinetic spatial curvature of voids on small scales. Much remains to be done in calibrating the dark matter fraction, primordial sound speed and the BAO [Baryon Acoustic Oscillations] scale. However, new results are likely to provide a robust framework for this. Our results imply profound consequences for cosmology and astrophysics. Indeed, a net preference for the timescape cosmology over the standard FLRW [Friedmann-Lemaıtre-Robertson-Walker metric] cosmologies may point to a need for revision of the foundations of theoretical cosmology, both ontologically and epistemologically, to better understand inhomogeneities and their backreaction on the average evolution of the Universe."

Supernovae evidence for foundational change to cosmological models

John K Clark    See what's on my new list at  Extropolis

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[Cosmin Visan]

Universe doesn't exist. "Universe" is just an idea in consciousness.

[John Clark]

On Fri, Jan 3, 2025 at 4:37 PM 'Cosmin Visan' via Everything List <everyth...@googlegroups.com> wrote:

> Universe doesn't exist. "Universe" is just an idea in consciousness.

Thank you sooooo much for that brilliant comment! I could never have thought of something that revolutionary but now thanks to you I understand the secrets of the entire universe, even though the universe doesn't exist!!!  But now I wonder if existence exists. 

 John K Clark    See what's on my new list at  Extropolis

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