Mudcat Café Message

sj

User Name	Thread Name	Subject	Posted
Bill D	BS: One for the astrophysicist (185* d)	RE: BS: One for the astrophysicist	28 Jul 15
current general opinion " The "top-down" model on the origin of the galaxies says that they formed from huge gas clouds larger than the resulting galaxy. The clouds began collapsing because their internal gravity was strong enough to overcome the pressure in the cloud. If the gas cloud was slowly rotating, then the collapsing gas cloud formed most of its stars before the cloud could flatten into a disk. The result was an elliptical galaxy. If the gas cloud was rotating faster, then the collapsing gas cloud formed a disk before most of the stars were made. The result was a spiral galaxy." Thus, 'most', if not all, stars were created after the basic galaxies assumed their shapes. (I have watched 5-6 TV programs which say as much,)

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