Neptune
Seymour Simon
Discusses the physical features and moons of the planet Neptune and how we have gained our knowledge of this giant world.

by Martyn Hamer (1983)
An introduction to planets, constellations, comets, meteors, and other objects that can be seen in the sky at night, with suggestions for nocturnal observers.
Seymour Simon
Discusses the physical features and moons of the planet Neptune and how we have gained our knowledge of this giant world.
Pam Spence
Text and realistic three-dimensional photographs introduce the solar system and man's exploration of it, as well as outer space in general.
Dennis B. Fradin
Presents basic information about the stars, constellations, galaxies, universe, solar system, and the earth. Also discusses famous astronomers and space travel.
Isaac Asimov
Perhaps the most mysterious and intriguing planet in our Solar System is Mars. Is there life on Mars? Have Martian canals been found? Timely topics include information relayed from Mars to Earth by probes, new missions to Mars, and speculation about the colonization of Mars.