This book was published by an agency of the U.S. Government and is, by law, considered in the Public Domain. Such works may be republished by others without violation of copyright law as is the case here. This book was originally published by NASA Ames Research Center, Moffet Field Mountain View, CA in June 1995. FWIW, I was the publishing manager who supervised the production of this project by the NASA contractor staff at Ames Research Center. Since the book is about space science and satellites sent to the Planet Venus, it is obviously plain stupid to state that the book was published before 1923... especially since it shows the original publication date as 1995.

Highlights the twelve-year odyssey of the Voyager spacecraft, and discusses the new findings about Neptune: its atmosphere, satellites, gravitational field, and other surprises, with more than thirty-five photographs from NASA.

Offers a wide-ranging discussion of the fourth planet, examining the place of Mars in mythology and fiction, the science of the planet, and plans for future exploration

Describes what Voyager 2 has revealed about the planets Uranus and Neptunes, speculates on what we will learn about Pluto, and looks at the theory of a tenth planet

Summarizes current knowledge of the planet Venus, describes the Venera and Pioneer space programs, and traces the history of the astronomical observation of Venus

Product Description: Book by Burgess, Eric

Traces the history of scientific research on the planet Jupiter from the observations of Galileo to the explorations of the Pioneer and Voyager space probes

An account of the 1976 Viking expedition to Mars describes the spacecraft and its instruments, the journey itself, and the mission's results

Documents the challenges and the social, political, and economic factors involved in the planning and technological achievement of the Mariner 10 mission, and features more than one hundred high-resolution photographs of the surface of Mercury