Chaos in the Cosmos

''he year was 1889. The French physicist-mathematician Henry T Poincare could not believe his eyes. He had worked for months on one of the most famous problems in science-the problem of three bodies moving around one another under mutual gravita­ tional attraction-and what he was seeing dismayed and trou­ bled him. Since Newton''s time it had been assumed that the problem was solvable. All that wa...