Astrophysics (Index)About

cosmic web

(hypothesized structure of the dark matter throughout the universe)

The term cosmic web is used for a theorized large scale structure of the universe consisting of points of high dark matter density (where galaxies and galaxy clusters invariably form) and dark matter filaments (relatively thin strands of dark matter) joining them, embedded in space throughout the universe, the more-empty parts between being the observed voids. The structure is ever-changing due to gravitational interaction. This picture of the universe stems from (or, at minimum, has been highly supported by) cosmological simulations. The general idea is that the position of astronomical objects we see (galaxies, clusters) are attached to this underlying structure by gravitational attraction.


(physics,dark matter,gravity)
Further reading:
http://en.wikipedia.org/wiki/Dark_matter
http://en.wikipedia.org/wiki/Observable_universe
http://en.wikipedia.org/wiki/Void_(astronomy)

Referenced by pages:
dark matter filament
Keck Observatory
large scale structure (LSS)

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