The three laws of Robotics: 1) A robot may not injure a human being or, through inaction, allow a human being to come to harm. 2) A robot must obey orders given to it by human beings except where such orders would conflict with the First Law. 3) A robot must protect its own existence as long as such protection does not conflict with the First or Second Law. With these three, simple directives, Isaac Asimov changed our perception of robots forever...

At last, the costly and bitter war between the two Foundations had come to an end. The scientists of the First Foundation had proved victorious; and now they retum to Hari Seldon''s long-established plan to build a new Empire that the Second Foundation is not destroyed after all-and that its still-defiant survivors are preparing their revenge. Now the two exiled citizens of the Foundation-a renegade Councilman and the doddering historian-set out in...

"Led by its founding father, the psychohistorian Hari Seldon, and utilizing science and technology, the Foundation survived the greed and barbarism of its neighboring warrior-planets. Now cleverness and courage may not be enough. For the Empire--the mightiest force in the Galaxy--is even more dangerous in its death throes. Even worse, a mysterious entity called the Mule has appeared with powers beyond anything humanly conceivable. Who--or what--is...

A band of psychologists, under the leadership of psychohistorian Hari Seldon, plants a colony to encourage art, science, and technology in the declining Galactic Empire and to preserve the accumulated knowledge of humankind

An easy-to-read explanation of the chemical and physical nature of the sun

Briefly describes the characteristics of the sun, planets, and stars of our solar system and some of the still unsolved mysteries of the universe

"The Foundation lies in ruins--destroyed by a mutant mind bent on humanity's annihilation. But it's rumored that there's a Second Foundation hidden somewhere at the end of the Galaxy, established as insurance to preserve the knowledge of mankind. Now a desperate race has begun between the survivors of the First Foundation and an alien entity to find this last flicker of humanity's shining past--and future hope. Yet the key to it all might be a fourteen-year-old...

Describes the characteristics of the seventh planet from the sun as revealed in the information sent back by Voyager 2

Discusses the origins, physical makeup, and relationship to earth of the huge star called the sun

Examines the mass extinction of dinosaurs and offers a possible explanation of the causes