What if the big-bang theory is wrong? Recently, Princeton University physicist Paul Steinhardt and Neil Turok at Cambridge introduced the "cyclic theory" of the early universe. In this picture, space and time exist forever. The big bang is not the beginning of time. Rather, it is a bridge to a pre-existing contracting era. Paul J. Steinhardt is the Albert Einstein Professor in Science at Princeton University, a member of thef aculty in both the Department of Physics and in the Department of Astrophysical Sciences. He received his B.S. in Physics at Caltech in 1974; his M.A. in Physics in 1975 and Ph.D. in Physics in 1978 at Harvard University. He is a Fellow in the American Physical Society and a member ofthe National Academy of Sciences.