Doubts about nebulae and star formation

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Nebulae are formed from the remnants of stars that have exploded, and they serve as the birthplace for new stars, despite containing mostly hydrogen and helium. While supernova remnants do include heavier elements, the interstellar medium primarily consists of hydrogen, which is crucial for star formation. The process of star formation requires a certain density to initiate gravitational collapse, often aided by the remnants of previous stars. Massive stars consume their hydrogen fuel inefficiently, and once they reach a certain mass, they can collapse into black holes, but this typically occurs after they have ignited nuclear fusion. Understanding the dynamics of star formation involves recognizing the balance between gravitational forces and the thermal pressures generated during the collapse of gas clouds.
  • #31
Chronos said:
See http://arxiv.org/abs/astro-ph/0703325 for the paper that got the weird ball rolling.
While I believe there is a certain symmetry to the universe, papers such as these are just too deep for me to fahom.
 

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