I was watching the program 'Parallel Universes' and they had wonderful graphics showing the ripples of the branes and how that was responsible for the clumping.

OT I was wondering if the topological defect known as domain walls and textures--2D and 3D versions of Cosmic superstrings--might be pieces of 'naked (exposed) brane'. I also wonder if there may be a different imprint beyond the more usual warping of space-time by gravity--a different imprint obviating the need for missing mass--that might actually show its influence away from mass--by deep space probes deviating (over more than a solar system width tho').

Also--could exposed branes allow for some of the energy mass of a nearby budding universe to be shunted across--coming out of the exposed brane--and allowing the steady state folks some hope for at least some continued influx of matter--albeit in a smaller scale?

It just bums me out how everything is just going to be a void--with our galaxy being left alone.

If time pre-existed the Big Bang (as suggested by that Horizon program), could we learn the physics of branes by observing domain walls if we are so lucky as to see one?