On October 1, 1958, the world's first civilian space agency opened for business as an emergency response to the Soviet Union's launch of Sputnik a year earlier. Within a decade, the National Aeronautics and Space Administration, universally known as NASA, had evolved from modest research teams experimenting with small converted rockets into one of the greatest technological and managerial enterprises ever known, capable of sending people to the Moon aboard gigantic rockets and of dispatching robot explorers to Venus, Mars, and worlds far beyond. In spite of occasional, tragic setbacks in NASA's history, the Apollo lunar landing project remains a byword for American ingenuity; the winged space shuttles spearheaded the International Space Station and a dazzling array of astronomical satellites and robotic landers, and Earth observation programs have transformed our understanding of the cosmos and our home world's fragile place within it. Throughout NASA's 60-year history, images have played a central role. Who today is not familiar with the Hubble Space Telescope's mesmerizing views of the universe or the pin-sharp panoramas of Mars from NASA's surface rovers? And who could forget the photographs of the first men walking on the Moon? Researched with the collaboration of NASA, this collection gathers more than 400 historic photographs and rare concept renderings, scanned and remastered using the latest technology and reproduced in extra-large size. Texts by science and technology journalist Piers Bizony, former NASA chief historian Roger Launius, and best-selling Apollo historian Andrew Chaikin-and an extensive mission checklist documenting the key human and robotic missions-round out this comprehensive exploration of NASA, from its earliest days to its current development of new space systems for the future. The NASA Archives is more than just a fascinating pictorial history of the U.S. space program. It is also a profound meditation on why we choose to explore space and how we will carry on this grandest of all adventures in the years to come.

Saturn is the showcase of the Solar System. It may not be the largest of the planets, nor the smallest, nor even the only planet with rings. But it is among the most stunningly beautiful objects in the sky, and is always breathtaking when seen in a telescope. This is a beautifully illustrated, authoritative overview of the entire history of humankind's fascination with the ringed planet, from the first low-resolution views of Galileo, Huygens and other early observers with telescopes to the most recent discoveries by the spacecraft Cassini, which studied the planet at close range between 2004 and 2017. The book describes the planet from inside out, details the complicated system of rings and their interaction with Saturn's bevy of satellites, and considers how Saturn formed and the role it played in the early history of the Solar System. Featuring the latest research and a spectacular array of images, it will appeal to the wide audience for astronomy and popular science.

Es geschah vor nicht langer Zeit, daB ein deutscher Phy siker im Vorwort eines kleinen Buches liber ein aktuelles physikalisches Gebiet dem Verleger besonders dankte, weil er die Arbeit so beschleunigt hatte, daB das Buch nicht wahrend des Druckes veraItete. Dies ist fur das Arbeitstempo der modernen Physik be zeichnend, und es konnte unter gewissen Umstanden das selbe fUr die Astronomie sein. 'Wenn der Unterzeichnete wahrend des Druckes der vorliegenden kleinen Arbeit keine ernsthaften Sorgen in derselben Richtung wie sein Kollege in der Physik zu haben brauchte, so liegt das im wesent lichen daran, daB das Buch Probleme aus der klassischen Astronomie behandeIt. Doch auf einen Punkt muB ich in diesem Zusammenhang die Aufmerksamkeit lenken: die Eddingtonsche Theorie yom inneren Bau der Sterne ist in der letzten Zeit so groBen Veranderungen ausgesetzt ge wesen, daB die Schilderung, die ich in meinen vorhedgen Buchern "Astronomische Miniaturen" (das Kapitel Scylla und Charybdis) und "Die Hauptprobleme der modernen Astronomie" davon gegeben habe, jetzt als teilweise veraltet angesehen werden muB. In der vorliegenden Arbeit ist der Gegenstand unter Berucksichtigung der letzten Entwick lungsphasen behandelt. Die Verfasser haben bei der Ausarbeitung dieses kleinen Buches an dem Programm der "Astronomischen Minia turen" festgehaIten: die Einteilung in eine Reihe kleiner - IV- Kapitel, die fiir einen wesentlichen Teil ganz unabhangig voneinander sind."

Although space travel has been a topic of great interest to many, few have an understanding of the ultimate limits that will determine its possibilities. One thing is certain. No matter the advancement in technology, whether earthling or extraterrestrial, energy requirements will determine ultimate success in space travel. True, technology will play a part. Among other things, it will determine the kinds of fuels that will be useable in deep space travel and that will, in the end, determine its successes.
Are we ultimately going to be able to travel outside our own solar system to reach other worlds? Have extraterrestrials really visited us in the past? These are the questions addressed in this book. It is written for the layman, and does not require a technical background.