Constancy of physics apparently may not be true

[NightBazaar]

Originally Posted by Brian.Pearson

I just wonder. Could it have anything to do with different accelerations in some ares of the universe than others?

There's the area called "Dark Flow" that seems pretty odd. Not sure it would require different physics to explain though. As yet, it still seems to be an unresolved mystery.

[Brian.Pearson]

Originally Posted by NightBazaar

There's the area called "Dark Flow" that seems pretty odd. Not sure it would require different physics to explain though. As yet, it still seems to be an unresolved mystery.

Interesting stuff. I went to the wiki and then went all the way to criticisms. It seems curiouser and curiouser.


Dark flow - Wikipedia, the free encyclopedia

[destinedtodave]

Originally Posted by Brian.Pearson

Interesting stuff. I went to the wiki and then went all the way to criticisms. It seems curiouser and curiouser.


Dark flow - Wikipedia, the free encyclopedia

Interesting indeed. The wiki article mentioned that scientists believe that it's either a sibling universe or a region with a different spacetime fabric. How did they deduce that? As far as my understanding goes, wouldn't an immense gravitational pull explain it (of course, a sibling universe might exert such a pull)? The part about it being "different" really blows my mind.

[NightBazaar]

Originally Posted by decafdave

Interesting indeed. The wiki article mentioned that scientists believe that it's either a sibling universe or a region with a different spacetime fabric. How did they deduce that? As far as my understanding goes, wouldn't an immense gravitational pull explain it (of course, a sibling universe might exert such a pull)? The part about it being "different" really blows my mind.

Even though the distance of another structure would seem profpund to us, if it has enough mass, it could have enough of an effect to pull some galaxies in our universe toward it. Another possibility is that space mighht not be limited to just our universe. Imagine if what we describe as the universe is nothing more than a single structure in an ever larger structure, a mega-universe filled with structures as large as our universe. It would not discount the Big Bang of a universe.

Then too, there is the concept of bubble universes or branes. Where these concepts get tricky is that they get into areas that are dimesional, with at least one extra spatial dimension, and perhaps an extra dimension of time. It might also be that Big Bangs and universes pop into existence from a scalar field of sort of a frothy quantum foam, meaning it's possible another Big Bang could have occured forming a universe very near to ours.
Quantum foam - Wikipedia, the free encyclopedia

I just read this today. It may be an explanation of what's happening might represent peculiar velocities that change the expansion rate of an observer in relation to the smoother Hubble flow. Below is a pdf file outlining it. It's pretty deep technical reading, but there's enough to glean some of the ideas out of it. This was recently published -- September, 2011.
http://www.astro.auth.gr/~tsagas/Pub.../PRD/PRD14.pdf

[Brian.Pearson]

PROVIDENCE, R.I. [Brown University] — If dark matter exists in the universe, scientists now have set the strongest limit to date on its mass.

Just throwing that in...