Discusses the possibile causes of the extinction of the dinosaurs.

Presents both ancient and modern beliefs about the universe.

Not only is Uranus four times wider than the Earth and 15 times heavier, but it has rings and rolls on its side slowly around the sun, yet turns in one "Uranus day" in less than 17 hours (the Earth's is about 24 hours).

A collection of thirty-six short stories and essays that cover five decades of thought about robots. Discusses Asimov's robot characters such as his first robot Robbie, the humanoid robot, and the human/robot detective team of Bailey and Olivaw.

In the year 2035, robots are a common, trusted part of life. But that trust is broken when a scientist is found dead, and a skeptical Chicago police detective investigating the murder believes that a robot is responsible. It seems impossible for a robot to break the Three Laws of Robotics, for if that were to happen there would be nothing to stop them from taking over the world. Aiding the detective in his investigation is a psychologist who specializes...

Examines past, present, and future attempts of world nations to explore outer space and build enduring and effective space exploration programs.