This contributed volume arose from the idea of assembling scientists from space research and ground development, time transfer techniques and radio science missions, the time-frequency community, and both the geodesy-geophysics and solar system exploration communities. Such a fusion of diverse interests in these fields related to time measurement has rarely, if ever, been achieved. The topics covered in these papers include clocks, time transfer, technology, and the applications of high-precision clocks in Earth Sciences, Fundamental Physics, Astrophysics, and Solar System exploration. This book will be of major interest to all those involved in the implementation and utilization of space-based high precision timing for a wide range of applications.  Originally published in Space Science Reviews in the Topical Collection "High Performance Clocks with Special Emphasis on Geodesy and Geophysics and Applications to Other Bodies of the Solar System"