(April 4, 2014 at 9:07 am)ThePinsir Wrote: Would this also apply to the widely-believed Star-Gas-Star model? We obviously can't test the origin or stars, and I don't think we've ever observed a star being born (have we?). Same with the origin of planets - it would take probably a billion or so years to watch space debris coalesce under its own gravity to form planets; we can't very well perform controlled laboratory experiments on it either.
So is our current model of the formation of solar systems also "not even a hypothesis"? I am so confused
We observe all the different stages of star formation. We also can create simulations in computers programmed only with laws of physics which produce results that support the theory.