The Universe:

This is a complete scientific survey of all that is known about the Universe, presented with the clarity and precision so characteristic of the writing of Isaac Asimov. Beginning with chapters on the earth and our solar system, he guides the reader through exploration and discovery of the unimaginably distant reaches of outer space. Barely fifty years ago, their horizons of our known universe were pushed back. The Milky Way was recognized as only a drop in a huge black ocean; other galaxies were discovered; the Universe was found to be expanding - its rim many billions of light-years away.