G’day Phills dad
Phill without being disrespectful, have you read some of the papers from.
http://www.cosmology.info/newsletter
The BBT is very theoretical.
To undertand how matter contracts and expands you may need to read up on jet formation small and large and giant and megagiant. These jets can influence the form near and far. From star surround to clusters of stars to AGN from a few hundred light light years to thousands of light years to millions of light years affecting galaxies far far away.
http://chandra.harvard.edu/photo/2003/cenajet/
Centaurus A Jet:
Energetic Jet Meets Resistance In Nearby Galaxy
Jets such as the one in Centaurus A Jet are widespread phenomena in the cosmos, and represent one of the primary means for extracting energy from the vicinity of a black hole. Some jets extend over distances of a million light years. They represent a major energy source for the galaxy and are thought to affect the evolution of the host galaxy and its surroundings. The Centaurus A Jet image will help scientists to understand the effects of jets on their environment.
http://chandra.harvard.edu/photo/2001/0134/
M87 Jet:
Chandra Sheds Light on the Knotty Problem of the M87 Jet
Quasars & Active Galaxies :: Galaxies with unusually energetic activity, including high-energy jets, that is related to a central supermassive black hole.
http://chandra.harvard.edu/press/category/quasars.html