Books in Isaac Asimov's 21st Century Library of the Universe series

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

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

Discusses the smallest, farthest planet in our solar system, its discovery, its orbit, and its recently discovered satellite

Provides an insider's view of our own Milky Way and discusses the nature and behavior of galaxies in general

Explores the possibility of establishing colonies in space, traveling by starship to other galaxies, and meeting extraterrestrials

Discusses the characteristics of comets and meteors, and cites famous appearances and unexplained mysteries connected with them

Considers how stars come into being, change and grow older, and eventually come to an end

This index volume is a guide to the other thirty-three volumes of Isaac Asimov's New Library of the Universe.

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

Describes the characteristics of the fourth planet from the sun, the only one whose surface can be seen in any detail from the earth

Describes the characteristics and movements of the planet Neptune and how we found out about it.

Briefly describes beliefs of astronomers from ancient times to 1609, when Galileo's discoveries through the telescope gave birth to modern astronomy