A New true book

Describes man's exploration of the solar system, with emphasis on the Voyager probes sent to the outer planets beyond the asteroid belt.

Defines in simple terms the characteristics of outer space, satellites, and the principles of flight through space.

Simple text and illustrations describe the history of manned space travel and the training and duties of the astronauts.

Explains what jet propulsion is, Newton's third law of motion, the history of jet aviation, and jet plane designs.

Briefly discusses the work, uniform, and tools of fire fighters and describes a variety of fire trucks.

An elementary introduction to trains, how they work, and kinds of railroad cars.

Discusses the seventh planet, how it was named, and the information astronomers have gathered about it.

Examines the planet Mars and investigations both past and future to increase our knowledge of it.

Discusses the characteristics of Saturn and how information about it has been gathered from ancient times to the present day when the Voyager probes sent back a series of photographs of the ringed planet.

Discusses the erosion and pollution of soil, the harmful effects of these processes, and ways of preventing them.