A 1981 text that explains the workings of the solar system and retraces the paths of space probes such as the Voyager, Viking, Mariner, and Pioneer to reveal what they discovered about Venus, Mars, and other planets and satellites.
Presents the secrets of "Earth X" with more than one hundred pages of sketches, background notes, insights, and development material for future issues.
""An introduction to Earth, including information about the formation of Earth, geologic processes, landforms, the materials that make up Earth, and weather. Features include drawings, diagrams, photographs, and activities""--Provided by publisher.