Sunday, March 2, 2008

The Universe is foamy!

One of the biggest discoveries of the last 20 years is that the galaxies in the Universe are not distributed uniformly through space. There are huge voids with nearly nothing surrounded by filaments along which most of the galaxies are associated. It is as if galaxies were distributed along the films of soap bubbles in a foam.

The hypothesis is that "dark matter" is causing the galaxies to clump together.



If this is true, then what would happen when dark matter streams intersect?

Maybe polar ring galaxies (also sometimes called "polar disk galaxies")?

http://space.newscientist.com/article/mg19726455.500-x-marks-the-spot-in-dark-matter-web.html

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