Discovery Spaceopedia PDF Download

"A Meeting with the Universe is the story of what we learned about the universe and ourselves by going into space. It is not a textbook for scientists. It is written for everyone who shared the excitement and wonder fo the last few years -- students, teachers, scientists, other professional people, and curious citizens of all kinds. It is not a NASA history. It is a history of space exploration -- by NASA, by universities, by other government agencies, and by industries -- all of whom have played major roles. We have not attempted to apportion credit here; space has been studied by many, and the discoveries belong to us all. The book itself is a novel experiment in writing about science for non-scientific readers. It was not produced by science writers or journalists, but written and edited entirely by a group of NASA scientists, all of whom are deeply involved in space science activities and many of whom actively participated in the discoveries they describe. ... We are now at a watershed in space. After 20 years of challenging and exciting activity, we have done most of the easy things and made most of the obvious discoveries. What do we do next? How do we tackle the many new questions that have arisen about the Sun, the Earth, the other worlds, the universe around us, and ourselves? These are not just scientific questions. Their answers involve the understanding of the Earth's geology, its weather, and its climate -- factors that will affect the survival of our civilization, perhaps even of our species. ... Although we have only begun our movement into space, we have already traveled far and seen much. We have a shining vision of the universe and our future in it. Without that vision, without the will to follow it, something important in us -- perhaps we ourselves -- will perish." -- From the preface, Dr. John E. Naugle, Chief Scientist, NASA.