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Galaxies / [writer: Darlene Stille].

World Book, c2010.

Cosmology -- Juvenile literature.

Galaxies -- Juvenile literature.

Explore the universe.

64 p. : ill. (chiefly col.), col. maps ; 27 cm.

Includes bibliographical references (p. 62) and index.

What is a galaxy? -- How many galaxies are there? -- Focus on: grouping galaxies -- What is a spiral galaxy? -- What is an elliptical galaxy? -- What is an irregular galaxy? -- Focus on: peculiar galaxies -- Do galaxies usually exist in groups? -- How large are galaxies? -- Which is the most distant galaxy? -- Focus on: the galaxy we live in -- What is the nearest galaxy to ours? -- Do galaxies move around? -- How fast does a galaxy move? -- Do galaxies ever merge? -- Focus on: colossal collisions -- Who discovered that galaxies exist? -- Why does a galaxy glow? -- How do astronomers use light to study galaxies? -- How do astronomers count galaxies? -- When did galaxies start to form? -- How did galaxies form? -- Are new stars forming in galaxies? -- Are galaxies forming now? -- Focus on: gravity: a galactic glue -- Can galaxies die? -- What are some remaining mysteries about galaxies?

An introduction to galaxies with information about their formation and characteristics. Includes diagrams, fun facts, glossary, resource list, and index.

Stille, Darlene R.

World Book, Inc.

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