Re: Branes and gravity

Wasn't it Wayne Throop who wrote:
: David Johnston <david@xxxxxxxxx>
: I recently read a techno-thriller which described "branes" as complete
: three dimensional universes that only interact with each other through
: gravity and neutrinos. The thought struck me that if we are getting
: gravity from other universes that would explain where the "dark
: matter" is.
:
: So the question in my mind is, "Is this total bollocks"?

AIUI, that would explain why dark matter doesn't interact with
normal matter by anything but gravitation, but wouldn't explain why
it doesn't seem to interact with *itself* by anything but gravitation
(since if it did, it would tend to form into structures rather than remain
as a diffuse blob).

Or it could be that the branes are separated from each other by the equivalent of several hundred light years. The matter in the individual nearby branes forms info clumps, but the separation causes that detail not to be perceived in our universe.

--
Mike Williams
Gentleman of Leisure
.

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