Yes the CfA2 great wall:
http://en.wikipedia.org/wiki/CfA2_Great_Wall
and Sloan great wall:
http://en.wikipedia.org/wiki/Sloan_Great_Wall
Are within a billion light years of here. Of course sky surveys are still taking place, and no doubt more will be discovered as the technology is deployed.
Quote:
|
The Standard Model cannot account for such large structures, so in the actual cosmology it is hypothesized that such structures as the Great Wall form along and follow web-like strings of dark matter.[2] It is thought that this dark matter dictates the structure of the Universe on the grandest of scales. Dark matter gravitationally attracts baryonic matter, and it is this normal matter that astronomers see forming long, thin walls of super-galactic clusters.
|
The point is... how long it takes to form these structures with gravity... The BBT explanation is a combination of hypothesized strings, dark matter, BB bubbles.
Plasma cosmology was not introduced per se', it was just highlighting how far off BBT's hero "Dr Wright" has been with his sprays in the past.
Plasma cosmology does however predict the above formations... but thats a story for another day. Yes Narlikar does not sign up to plasma cosmology in full... the point is... we are not stuck with BBT by default.
Narlikar's response also highlights where both Narlikar and the Journal that published him did not take notice of Wrights thoughts.
I'll want to see a balanced critique of Wright before taking his words onboard. Whilst being a distinguished scientist, he's made some fairly fundamental errors in his critiques before (above), and is of course on the payroll of BBT's excalibur, the cosmic microwave background radiation projects. That alone is still hotly contested, and not showing up what was expected.
I understand cosmological redshift only applies in BBT where gravity is not dominant. The reader should also be aware of the many other mechanisms for redshift, also if redshift is clearly at odds the way BBT predicted (this thread), we may have (more) evidence for non cosmological redshift.
Is it gravity, is it some other mechanism, intrinsic. It will be interesting to explore.