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NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their special competences and with regard for appropriate balance.

This study was supported by Contract No. DE-FG02-05ER-41401 between the National Academy of Sciences and the Department of Energy and Grant No. PHY-0541656 between the National Academy of Sciences and the National Science Foundation. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the organizations or agencies that provided support for the project.

International Standard Book Number-13: 978-0-309-10408-1

International Standard Book Number-10: 0-309-10408-4

Cover: A chart of the nuclides overlays a view from the cameras of the Hubble Space Telescope. The transparent region of the nuclide chart (which shows isotopes as a function of the number of neutrons and protons in the nucleus) represents the unknown territory of the isotope landscape. Many rare isotopes play an important role in astrophysics, especially stellar nucleosynthesis. Courtesy of K. Rykaczewski and A. Rykaczewski.

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