Gravitational collapse of the wavefunction - an experimentally testable proposal, R. Penrose; local and global results on the Cauchy problem for the Einstein equations, Y. Choquet-Bruhat; mathematical challenges of general relativity, S. Klainerman; the global initial value problem in general relativity, D. Christodoulou; quantum gravity at the turn of the millennium, G.T. Horowitz; spinors, superalgebras and the signature of spacetime, S. Ferrara; recent developments in superstring theory, J.H. Schwarz; superstring phenomenology and large extra dimensions, I. Antoniadis; quantum strings and black holes, T. Damour; gravitational waves - the new generation of interferometric detectors, B.C. Barish; TAMA Project, T. Kimio; resonant detectors of gravitational waves, E. Coccia; implications of the r-mode instability of rotating relativistic stars, J.L. Friedman and K.H. Lockitch; chaotic phenomena in astrophysics and cosmology, V.G. Gurzadyan; astrophysical neutrinos - 20th century and beyond, J.N. Bahcall; solar and atmospheric neutrino results from super-kamiokande, T. Kajita; geodetic precession in binary neutron stars, M. Kramer; the hot Big Bang - physics and cosmology, R.B. Partridge; imaging the early universe and measuring the curvature of space, P. De Bernardis; type Ia supernovae and the accelerating universe, G. Aldering; the structure of the universe on 100 Mpc scales, J. Einasto; the distance scale of GRBs and the role of BeppoSAX, E. Costa; the cosmic gamma-ray bursts, S.G. Djorgovski et al; black holes and gamma ray bursts, R. Ruffini; spectral and timing signatures of the converging inflow into black hole -observational evidence of a black hole existence, L. Titarchuk; x-ray novae and the evidence for black hole event horizons, R. Narayan et al; strong field gravity measurements with quasi-periodic oscillations from low mass x-ray binaries, L. Stella; cosmic journeys - to the edge of gravity, space and time, N. White. (Part contents)