Topics examined include the Earth's origins, evolution, composition, waters, atmosphere, magnetic field, plus exploration of worlds beyond Earth.

Isaac Asimov, known primarily for his science fiction stories, was also a scientist. In cooperation with the Senior Scholastic magazine, he composed this wonderful and fascinating work of historical nonfiction. Twenty-six far-reaching discoveries and the twenty-nine scientists who made them-from Archimedes, who boasted he could move the world, to Goddard, who sent the first liquid-fuel rocket toward space. These men of vision and genius set their...

A description of the sun, the star of our solar system, which includes information on its origin, physical composition, and characteristics, as well as on studies made of the sun by instruments and satellites.

Presents a variety of astronomy projects, including creative writing and drawing assignments, modelmaking, sky observation, and experiments.

A description of Saturn, the second largest planet in our solar system, which includes information on its numerous moons, and spacecraft and probes which study it.

Describes the characteristics of the small planet closest to the sun whose day is twice as long as its year.

Offers an account of how scientists and amateurs use instruments such as space telescopes, computers, radio telescopes, and binoculars to study the universe.

A description of Mars, the fourth planet from our sun, which includes information on the controversy over possible life on Mars, on the planet's moons, and on space probes and spacecraft which have studied it.

Describes the planet closest to the sun, examining its size and composition, its surface features, its orbit, and efforts to learn more about this planet.

Presents beliefs of ancient peoples about the universe.