Reply To: Questions regarding DPF.

[pluto]

G’day

Knowing how matter contracts and expands is a cyclic process that is ongoing and does not apply to the total form of the universe.

We see this in star formation
We see this in cluster of stars
We see this in galaxy evolution
We see this in cluster of clusters of galaxies with an AGN that forms a megagiant jet ejecting matter and reforming its own galaxy form and galaxies afar.

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