Planetary astronomy in the 1990's

An overview is presented of current achievements and future possibilities that exist in planetary astronomy. Planetary astronomers employ a wide range of techniques, from straightforward telescopic observation to laboratory analysis of meteorites and cosmic dust. Much of this work focuses on three fundamental questions: how abundant are planets throughout the universe, how did the solar system form, and what can other planets tell us about earth? Several examples show that many recent discoveries reveal the continuing value of earth-orbit and ground-based methods for planetary studies.