From the Book - Revised edition.
What are black holes? Focus on: how a black hole forms How do we know black holes exist? Focus on: telescopic evidence of black holes What is a singularity? What is an event horizon? What happens outside the event horizon? What happens to matter once it enters a black hole? How big are black holes? Focus on: powerhouse galaxies What is a supermassive black hole? Are there different types of black holes? Do black holes ever exist in pairs? Could the sun ever become a black hole? Focus on: redshift What are quasars? How are quasars and black holes related? How far away are quasars? How big are quasars? How are quasars born? When and how were quasars first discovered? Why do scientists study quasars? Why is Stephen Hawking important to the study of black holes? How long does a black hole exist? What would happen to a person pulled into a black hole? Why do scientists continue to study black holes? What is a micro black hole?