The reader will find in this volume the Proceedings of the NATO Advanced
Study Institute held in Cortina d' Ampezzo, Italy, between July 25 and
August 6, 1993, under the title From Newton to Chaos: Modem Techniques
for Understanding and Coping With Chaos inN-Body Dynamical Systems. This
institute was the latest in a series of meetings held every three years
from 1972 to 1990 in dynamical astronomy, theoretical mechanics and
celestial mechanics. The proceedings from these institutes have been
well-received in the international community of research workers in
these disciplines. The present institute was well attended with 15
series of lectures being given by invited speakers: in addition some 40
presentations were made by the other participants. The majority of these
contributions are included in these proceedings. The all-pervading
influence of chaos in dynamical systems (of even a few variables) has
now been universally recognised by researchers, a recognition forced on
us by our ability, using powerful computer hardware and software, to
tackle dynamical problems that until twenty-five years ago were
intractable. Doubtless it was felt by many that these new techniques
provided a break-through in celestial mechanics and its related
disciplines. And so they were.