This section lists numerous questions in the area of physics, astronomy, cosmology and related topics, and then presents answers based on best available scholarship. This material was assembled by the editor, except where otherwise indicated. Each page linked to below includes detailed references.

1. What is the anthropic principle of cosmology? Anthropic principle
2. How solid is the evidence for the big bang? Big bang
3. Can computers think? Computers-think
4. What are the ultimate constituents of the universe? Constituents
5. What are the cosmic coincidences? Cosmic coincidences
6. What is the cosmological constant paradox? Cosmological constant
7. How are distances to the stars and galaxies calculated? Distance
8. What is Drake's equation? Drake's equation
9. How many planets outside the solar system can sustain life? Exoplanets
10. Where are the extraterrestrial civilizations? (Fermi's paradox) Fermi's paradox
11. Is the universe fine-tuned for intelligent life? Fine-tuned
12. Has fine-tuning been refuted? Fine-tuned-refuted
13. A bibliography of books and papers on universal fine-tuning: Fine-tuned bibliography
14. What is the inflationary theory of cosmology? Inflation
15. Why does the universe harbor intelligent life? Intelligent life
16. What is the multiverse, and what is its significance? Multiverse
17. Did the universe have a beginning? Universe-beginning