The Double Planet Author:Isaac Asimov Pyramid Books (c) 1966 — Publication date November 1968 — The fascinating story of man's drive toward the edge of space. — In only a matter of years, men will be driving deep into the universe, past the limits of our solar system into infinite, unimagined galaxies. Their launching base will be the moon - man's first step across space. — In THE DOUBL... more »E PLANET, Isaac Asimov discusses the many exciting secrets that science has uncovered about our own planet - and about our primary space target. He presents you with a vivid picture of the world awaiting the first explorers of Clavius and Mare Nubium - with accessible and enlightening explanations of phenomena as amazing as "solar winds," "lunar rills" and "magnetopause" - and with the crucial data man is slowly gathering about Earth's mysterious center.« less