International Astronomical Union

irmed detection came in 1992, with the discovery of several terrestrial-mass planets orbiting the pulsar PSR B1257+12.[31] The first confirmation of an exoplanet orbiting a main-sequence star was made in 1995, when a giant planet was found in a four-day orbit around the nearby star 51 Pegasi. Some exoplanets have been imaged directly by telescopes, but the vast majority have been detected through indirect methods such as the transit method and the radial-velocity method. Early speculations “ This

in addition to business firms, such diverse social units as (a) a political party trying to market its candidate to the public (b) the director of an art museum providing new exhibits to generate greater attendance and financial support (c) a labor union marketing its idea to members and to company management; and (d) professors trying to make their courses interesting for students. In addition to the range of items normally considered as products and services, what is being marketed might include

updated: April 26, 2016 Logical Reasoning Bradley H. Dowden Philosophy Department California State University Sacramento Sacramento, CA 95819 USA ii iii Preface Copyright © 2011-14 by Bradley H. Dowden This book Logical Reasoning by Bradley H. Dowden is licensed under a Creative Commons AttributionNonCommercial-NoDerivs 3.0 Unported License. That is, you are free to share, copy, distribute, store, and transmit all or any part of the work under the following conditions: