List of contributors; Preface; Part I. Remote Observations and Exploration of Main Belt Asteroids: 1. Remote observations of the main belt Pierre Vernazza, Fumihiko Usui and Sunao Hasegawa; 2. Exploring Vesta and Ceres Christopher T. Russell and Marc D. Rayman; Part II. Key Results from Dawn Exploration of Vesta and Ceres: 3. Protoplanet Vesta and HED meteorites Harry Y. McSween Jr. and Richard P. Binzel; 4. The internal evolution of Vesta Michael J. Toplis and Doris Breuer; 5. Vesta's geomorphology Debra L. Buczkowski, Ralf Jaumann and Simone Marchi; 6. The surface composition of Vesta Jean-Philippe Combe and Naoyuki Yamashita; 7. Ceres' surface composition Maria Cristina De Sanctis and Andrea Raponi; 8. Carbon and organic matter on Ceres Thomas Prettyman, Maria Cristina De Sanctis and Simone Marchi; 9. Ammonia on Ceres Eleonora Ammannito and Bethany Ehlmann; 10. Geomorphology of Ceres David A. Williams, Andreas Nathues and Jennifer E. C. Scully; 11. Ceres' internal evolution Julie Castillo-Rogez and Philip Bland; 12. Geophysics of Vesta and Ceres Anton I. Ermakov and Carol A. Raymond; Part III. Implications for the Formation and Evolution of the Solar System: 13. Formation of main belt asteroids Hubert Klahr, Marco Delbo and Konstantin Gerbig; 14. Isotopic constraints on the formation of the main belt Katherine R. Bermingham and Thomas S. Kruijer; 15. Origin and dynamical evolution of main belt asteroids Sean N. Raymond and David Nesvorný; 16. Collisional evolution of the main belt as recorded by Vesta William F. Bottke and Martin Jutzi; 17. Epilogue: the renaissance of main belt science Simone Marchi, Carol A. Raymond and Christopher T. Russell; Index.