Is random the right word? Last I heard, the
structures in the universe are arranged outside
the 'bubbles' of a 'foamy' universe. Not random.
gcruse: About randomess and order.
Order and randomness seem to alternate as you increase scale from which the universe is viewed.
So...
- Our solar system seems to have a clockwork order.
- But stars tumble and drift within the galaxy's arms (randomness)
- Then the arms sweep in approximate radial symmetry and almost "phonograph record" radial velocity curves (order)
- But galaxies tumble loosely around the centers of mass of clusters (randomness)
- Then superclusters form into vast sheets and bubbles, with planar arrangements of clusters, and vast "empty" zones, or voids. (order)
- Then on the greatest scale, a vast gray just barely differentiated or mottled slightly. (amorphous or random).
This is a gross oversimplification, but it is interesting how order and randomness seem to alternate over a range of scales.