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Quasars and black holes / [writer: Rebecca Hankin].

World Book, c2010.

Cosmology -- Juvenile literature.

Black holes (Astronomy) -- Juvenile literature.

Quasars -- Juvenile literature.

Explore the universe.

64 p. : col. ill. ; 26 cm.

Includes index.

Includes bibliographical references (p. 62) and index.

Introduction -- 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?

An introduction to quasars and black holes with information about their formation and characteristics. Includes diagrams, fun facts, a glossary, a resource list, and an index.

Hankin, Rebecca.

World Book, Inc.

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