Meteorites: A Journey through Space and Time
Although it does touch on legends and anecdotes about meteorites, this pictorial survey mainly delves into why the experts value every find: each one contains geochemical clues about the origin of the solar system. Bevan and de Laeter deliver the central facts on the radioactive dating that yields ages for a meteorite's formation and its time in space and on the ground. Dating is straightforward; more debatable, and what makes meteoritics a lively science, is figuring out from a meteorite's constituent minerals and crystals the conditions of temperature and pressure during its creation. Some, for example, contain microscopic diamonds, a sign they formed in supernovae shock waves before our Sun existed. Another reason scientists covet these extraterrestrial rocks and dust, explain the authors, is the indication they give of traffic congestion in our neighborhood, a concern with cosmic catastrophe reinforced by the album's photos and diagrams of craters on Earth. Informative and visually appealing, this title meets any library's need for a basic source on meteorites.Gilbert TaylorCopyright © American Library Association. All rights reserved