Black holes:
http://www.seasky.org/celestial-objects/black-holes.html
http://www.environmentalgraffiti.com/sciencetech/understanding-black-holes-universe/6800
Please answer 4 of the following questions. Each answer should be at least 1/2 page long. Illustrations, as appropriate, may be included. Consider this a take-home test.
1. Will there ever reach a point in astronomy where we can stop spending money on telescopes and NASA? Consider the issues of space travel, human civilization, and distance and life cycles of stars. Provide at least 5 pieces of evidence, not just opinion, for your point of view.
2. Why is Annie Cannon a revolutionary person in the study of stellar spectra, and is luminosity more closely related to magnitude or absolute magnitude? What does the catalogue tell us about stars and the universe?
3. How is the HR diagram related to the formation and life cycle of stars? What does a HR diagram of a stellar cluster tell us about that area of space?
4. Compare three end points of a star (supernova, black hole, white dwarf, or neutron star) and tell me
how to recognize them, and why their original mass doomed them to their fate.
5. What role does the balance between gravity and pressure play in the formation and life cycles of stars, and how does this affect the formation of elements in the periodic table?
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