From PGSC Wiki
Questions in this category have been asked by PJ
- What is the ISM composed of? Make a list...
- What are the densities and temperatures?
- What are the heating and cooling mechanisms involved?
- What is the geometry and composition of the Milky Way?
- Given that you are looking through the galaxy at a distant source, what observational effects can you expect to see in the optical? Radio? IR? X-ray?
- What is the Stromgren Radius? How does it scale with Luminosity and number density? (SR)