"An introduction to extrasolar planets, with information about their formation and characteristics. Includes diagrams, fun facts, a glossary, a resource list, and an index"--Provided by publisher.

Introduction -- What is a planetary system? -- What is in the solar system? -- Focus on: how the solar system formed -- What is an extrasolar planet? -- What was the first extrasolar planet found? -- How many extrasolar planets have been discovered? -- How many other planetary systems are there? -- How far away are other planetary systems? -- Do most other planetary systems have stars like the sun? -- Focus on: what other planetary systems might be like -- Is it hard to find extrasolar planets? -- How do astronomers look for extrasolar planets? -- Focus on: the transiting method for finding extrasolar planets -- Which planet-finding method have astronomers used the most? -- Have scientists ever seen an extrasolar planet? -- Are any extrasolar planets like Earth? -- What is a super-Earth? -- What is a pulsar planet? -- Focus on: what extrasolar planets might look like -- What is a gas giant? -- What is a hot Jupiter? -- What is a hot Neptune? -- What makes Earth right for life? -- Is there life on extrasolar planets? -- Why is the size of an extrasolar planet important? -- How will scientists know if there is life on an extrasolar planet? -- Are there new ways to search for extrasolar planets?.