Apfel, Necia H

Discusses a number of calendars since time began, which were developed by cultures as they discovered patterns in nature.

Discusses the achievements of outer space exploration in this century and examines future possibilities such as a permanent space station, colonies in space, and journeys outside the solar system.

Discusses the complex legal issues involved in modern space travel and exploration that have become the basis for much international debate since the space age began in 1957 with the launch of Sputnik.

Examines the development and travels of the space probes Voyager I and Voyager II and the information they have provided since the first launch in 1977.

Discusses the formation, composition, and placement of stars and groups of stars throughout the universe.

Discusses the geological features, movement, and recent exploration of Earth's closest neighbor.

Traces the search leading to the discovery of the smallest bits of matter, pieces too small to be subdivided, and discusses recent developments in the field of particle physics, or study of the invisible microworld of elementary particles.

Discusses the basic principles of relativity and uses "thought experiments" to explain concepts such as the relationship between space and time, gravitation and acceleration, and the curvature of space.

Instructions for a variety of experiments in astronomy including making a telescope, building a planetarium, measuring the circumference of the Earth, and detecting cosmic rays.

Explores and explains the unique and intriguing features of the Orion constellation from ancient perspectives on the universe to the birth and evolution of stars.