Space-Time with Bound Cluster
Dense regions reach a maximum size and then fall back into a bound
object like a cluster of galaxies. Once the cluster is formed, its
physical size remains essentially constant. The
shows a dense region in blue on the left. All of the particles in
this diagram are moving solely under the influence of gravity.
The galaxies in the blue region are accelerating more just because the
region is denser and therefore has higher gravitational forces.
There is no mysterious force causing the expansion of the Universe that
would cause bound systems like the Solar System to expand.
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Copyright 1997 Edward L. Wright
Last modified 8-Feb-97