The Hidden Universe (Wiley-Praxis Series in Astronomy & Astrophysics) - Tapa blanda

An introduction for undergraduate and postgraduate astronomers, astrophysicists, cosmologists, physicists, space scientists, and amateur astronomers with a knowledge of elementary algebra and calculus. Tayler (astronomy, U. of Sussex, England) discusses the evidence that there may be much more matter in the universe than is immediately visible; the hidden matter is apparent only because of the gravitational influence it exerts on other bodies. First published in 1991. Annotation copyright Book News, Inc. Portland, Or.