Case studies have been added to every chapter. The case study is introduced on the chapter opener and is revisited 3 times throughout the chapter. Two new boxed readings have been added Historical Focus and Have You Ever Wondered?

Pathways to Astronomy 2011, McGraw-Hill Science/Engineering/Math, New York, NY

ISBN-13: 9780073512136

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Pathways to Astronomy 2011, McGraw-Hill Science/Engineering/Math

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Pathways to Astronomy 2008, McGraw-Hill

ISBN-13: 9780073404455

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Pathways to Astronomy 2008, McGraw-Hill Science/Engineering/Math

ISBN-13: 9780077263119

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Pathways to Astronomy 2007, McGraw-Hill Higher Education, Boston, MA

ISBN-13: 9780072499650

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