Space: Mankind's Fourth Environment focuses on the emerging trends in astronomy, taking into consideration space transportation and exploration. Along with this topic are various technological developments that are widely used and considered with space, referred to in this book as humankind's ""fourth environment"", as another potential destination of man. Divided into four parts, the book points at different challenges and problems related to the consideration of space as another environment for humankind, which is observed in the manned space flight programs of the United States and Russia. The book gives emphasis on the improvement of space technology, particularly the use of satellites in communication, emphasizing the use of Intelsat 5 and European L-sat in broadcast system. Studies on active and passive microwave sensors are discussed and a discussion on the medical results of a manned space flight is also presented. The book will surely boost the interest of astronomers and those interested in space technology and exploration.

Seeking to reenergize Americans' passion for the space program, the value of further exploration of the Moon, and the importance of human beings on the final frontier, Claude A. Piantadosi presents a rich history of American space exploration and its major achievements. He emphasizes the importance of reclaiming national command of our manned program and continuing our unmanned space missions, and he stresses the many adventures that still await us in the unfolding universe. Acknowledging space exploration's practical and financial obstacles, Piantadosi challenges us to revitalize American leadership in space exploration in order to reap its scientific bounty. Piantadosi explains why space exploration, a captivating story of ambition, invention, and discovery, is also increasingly difficult and why space experts always seem to disagree. He argues that the future of the space program requires merging the practicalities of exploration with the constraints of human biology. Space science deals with the unknown, and the margin (and budget) for error is small. Lethal near-vacuum conditions, deadly cosmic radiation, microgravity, vast distances, and highly scattered resources remain immense physical problems. To forge ahead, America needs to develop affordable space transportation and flexible exploration strategies based in sound science. Piantadosi closes with suggestions for accomplishing these goals, combining his healthy skepticism as a scientist with an unshakable belief in space's untapped—and wholly worthwhile—potential.

The concept of the common heritage of mankind is one of the most extraordinary developments in recent intellectual history and one of the most revolutionary and radical legal concepts to have emerged in recent decades. The year 1997 marks the thirtieth anniversary of the advent of the concept in the domain of public international law. Ever since its emergence, it has become evident that no other concept, notion, principle or doctrine has brought as much intensive debate, controversy, confrontation and speculation as the common heritage phenomenon did. This is because it is a philosophical idea that questions the regimes of globally important resources regardless of their situation, and requires major changes in the world to apply its provisions. In other words, the application and enforcement of the common heritage of mankind require a critical reexamination of many well-established principles and doctrines of classical international law, such as acquisition of territory, consent-based sources of international law, sovereignty, equality, resource allocation and international personality. This book aims to explore the legal theory and implications of the concept of the common heritage of mankind. It addresses almost all aspects of the concept in the light of the experience of three decades. The author takes into account the elements of the common heritage concept in the fields of jurisprudence, outer space law, the law of the sea, the law of Antarctica, international environmental law, human rights and general principles of public international law. It tries to develop a normative framework through which the concept may offer alternatives for the governance of the global commons.