As interplanetary travel by robot vehicles launched from earth becomes more sophisticated, the solar system neighborhood will be constantly rediscovered. This will lead to the maturation of the science of comparative planetology. This discipline, involved in study of the origin, evolution, and nature of planets, promises significant future…

This article reviews the historical and current observational status of searches for other planetary systems, discusses the nature of the observational problem, and indicates the prospects for success in the future. (DS)

Discusses the use of artificial intelligence to improve occupational instruction in complex subjects with high performance goals, such as those required for high-technology jobs. Highlights include intelligent computer assisted instruction, examples in space technology training, intelligent simulation environments, and the need for adult training…