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If standard gravitational theory is correct, then most of the matter in the universe is in an unidentified form which does not emit enough light to have been detected by current instrumentation. This book is the second editon of the lectures given at the 4th Jerusalem Winter School for Theoretical Physics, with new material added. The lectures are devoted to the "missing matter" problem in the universe, the search to understand dark matter. The goal of this volume is to make current research work on unseen matter accessible to students without prior experience in this area and to provide...

Now, Alan Lightman, the author of the brilliantly original bestselling novel Einstein's Dreams, presents the real-life drama of astronomy, a journey far into the stars that outpaces any fiction for adventure and excitement. Unsurpassed in its authoritativeness, TIME FOR THE STARS is based on the report of the National Academy of Science's Astronomy and Astrophysics Survey Committee, for whose science panel Alan Lightman served as chair. Here is a book that will introduce you to cosmic puzzles about people and planets stars and galaxies, and the beginnings and the ends of the universe. How do...