Two theories revolutionized the 20th century view of space and time - Einstein's general theory of relativity and quantum physics. This work presents developments in cosmology, theoretical physics and mathematics, and covers the future of spacetime physics.

Two theories revolutionized the 20th century view of space and time: Einstein's general theory of relativity and quantum mechanics. Their union has given rise to elementary particle theories with extra spacetime dimensions, the inflationary model of big bang cosmology, the hypothesis of dark matter in the universe, the discovery of radiation from quantum black holes, and the fuzzy spacetime geometry of superstrings and M-theory. In this work, experts present developments in cosmology, theoretical physics and mathematics, and share their thoughts on the future of spacetime physics.

Astrophysical Neutrinos: 20th Century and Beyond (J N Bahcall, Institute for Advanced Study, Princeton)
The Case for Discrete Energy Levels of a Black Hole (J D Bekenstein, The Hebrew University of Jerusalem)
The Measure of Cosmological Parameters (W L Freedman, Carnegie Observatories, Pasadena)
Progress in Weakly Coupled String Phenomenology (M K Gaillard, University of California, Berkeley)
Spacetime Quantum Mechanics (J B Hartle, University of California, Santa Barbara)
Inflation and String Cosmology (A Linde, Stanford University)
Spacetime and Vacuum as Seen from Moscow (L B Okun, ITEP, Moscow)
The Dark Side of the Universe (J Silk, Oxford University)
Geometry and Spacetime (S-T Yau, Harvard University)
and other papers.