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Books > Professional & Technical > Other technologies > Space science

Modelling the Upper Atmosphere of Gas-Giant Exoplanets Irradiated by Low-Mass Stars (Hardcover, 1st ed. 2017): Joshua Chadney Modelling the Upper Atmosphere of Gas-Giant Exoplanets Irradiated by Low-Mass Stars (Hardcover, 1st ed. 2017)
Joshua Chadney
R2,900 R1,937 Discovery Miles 19 370 Save R963 (33%) Ships in 12 - 19 working days

This PhD thesis details the development of a new 1D ionospheric model to describe the upper atmospheres of extrasolar giant plants. The upper atmospheres of Hot Jupiters are subject to extreme radiation conditions that can result in rapid atmospheric escape. The composition and structure of these planets' upper atmospheres are affected by high-energy emissions from the host star. The nature of these emissions depends on the stellar type and age, making them important factors in understanding the behaviour of exoplanetary atmospheres.

Spacecraft TT&C and Information Transmission Theory and Technologies (Hardcover, 2015 ed.): Jiaxing Liu Spacecraft TT&C and Information Transmission Theory and Technologies (Hardcover, 2015 ed.)
Jiaxing Liu
R4,918 R4,622 Discovery Miles 46 220 Save R296 (6%) Ships in 12 - 19 working days

Spacecraft TT&C and Information Transmission Theory and Technologies introduces the basic theory of spacecraft TT&C (telemetry, track and command) and information transmission. Combining TT&C and information transmission, the book presents several technologies for continuous wave radar including measurements for range, range rate and angle, analog and digital information transmissions, telecommand, telemetry, remote sensing and spread spectrum TT&C. For special problems occurred in the channels for TT&C and information transmission, the book represents radio propagation features and its impact on orbit measurement accuracy, and the effects caused by rain attenuation, atmospheric attenuation and multi-path effect, and polarization composition technology. This book can benefit researchers and engineers in the field of spacecraft TT&C and communication systems. Liu Jiaxing is a professor at The 10th Institute of China Electronics Technology Group Corporation.

Quest for the Stars - The Prospects of Interstellar Travel (Hardcover): Ben Rankin Quest for the Stars - The Prospects of Interstellar Travel (Hardcover)
Ben Rankin
R618 Discovery Miles 6 180 Ships in 12 - 19 working days
Magnetospheric Plasma Physics: The Impact of Jim Dungey's Research (Hardcover, 1st ed. 2015): David Southwood, Stanley W H... Magnetospheric Plasma Physics: The Impact of Jim Dungey's Research (Hardcover, 1st ed. 2015)
David Southwood, Stanley W H Cowley Frs, Simon Mitton
R4,457 R3,600 Discovery Miles 36 000 Save R857 (19%) Ships in 12 - 19 working days

This book makes good background reading for much of modern magnetospheric physics. Its origin was a Festspiel for Professor Jim Dungey, former professor in the Physics Department at Imperial College on the occasion of his 90th birthday, 30 January 2013. Remarkably, although he retired 30 years ago, his pioneering and, often, maverick work in the 50's through to the 70's on solar terrestrial physics is probably more widely appreciated today than when he retired. Dungey was a theoretical plasma physicist. The book covers how his reconnection model of the magnetosphere evolved to become the standard model of solar-terrestrial coupling. Dungey's open magnetosphere model now underpins a holistic picture explaining not only the magnetic and plasma structure of the magnetosphere, but also its dynamics which can be monitored in real time. The book also shows how modern day simulation of solar terrestrial coupling can reproduce the real time evolution of the solar terrestrial system in ways undreamt of in 1961 when Dungey's epoch-making paper was published. Further contributions on current Earth magnetosphere research and space plasma physics included in this book show how Dungey's basic ideas have remained explanative 50 years on. But the Festspiel also introduced some advances that possibly Dungey had not foreseen. One of the contributions presented in this book is on the variety of magnetospheres of the solar system which have been seen directly during the space age, discussing the variations in spatial scale and reconnection time scale and comparing them in respect of Earth, Mercury, the giant planets as well as Ganymede.

Reusable Space Transportation Systems (Hardcover, 2011 ed.): Heribert Kuczera, Peter W. Sacher Reusable Space Transportation Systems (Hardcover, 2011 ed.)
Heribert Kuczera, Peter W. Sacher
R4,943 R4,596 Discovery Miles 45 960 Save R347 (7%) Ships in 12 - 19 working days

The authors review the past 20 years work in this field, and bring together for the first time details of the technology available and being developed to provide totally reusable launch vehicles for the future exploitation and exploration of space.

Roswell Incident Exposed (Hardcover): Jason M Doss Roswell Incident Exposed (Hardcover)
Jason M Doss
R861 Discovery Miles 8 610 Ships in 10 - 15 working days
A Dirty Window - Diffuse and Translucent Molecular Gas in the Interstellar Medium (Hardcover, 1st ed. 2017): Loris Magnani,... A Dirty Window - Diffuse and Translucent Molecular Gas in the Interstellar Medium (Hardcover, 1st ed. 2017)
Loris Magnani, Steven N. Shore
R5,704 Discovery Miles 57 040 Ships in 12 - 19 working days

This book provides an introduction to the physics of interstellar gas in the Galaxy. It deals with the diffuse interstellar medium which supplies a complex environment for exploring the neutral gas content of a galaxy like the Milky Way and the techniques necessary for studying this non-stellar component. After an initial exposition of the phases of the interstellar medium and the role of gas in a spiral galaxy, the authors discuss the transition from atomic to molecular gas. They then consider basic radiative transfer and molecular spectroscopy with particular emphasis on the molecules useful for studying low-density molecular gas. Observational techniques for investigating the gas and the dust component of the diffuse interstellar medium throughout the electromagnetic spectrum are explored emphasizing results from the recent Herschel and Planck missions. A brief exposition on dust in the diffuse interstellar medium is followed by a discussion of molecular clouds in general and high-latitude molecular clouds in particular. Ways of calibrating CO observations with the molecular hydrogen content of a cloud are examined along with the dark molecular gas controversy. High-latitude molecular clouds are considered in detail as vehicles for applying the techniques developed in the book. Given the transient nature of diffuse and translucent molecular clouds, the role of turbulence in the origin and dynamics of these objects is examined in some detail. The book is targeted at graduate students or postdocs who are entering the field of interstellar medium studies.

Humans in Outer Space - Interdisciplinary Perspectives (Hardcover, 2011 ed.): Ulrike Landfester, Nina-Louisa Remuss, Kai-Uwe... Humans in Outer Space - Interdisciplinary Perspectives (Hardcover, 2011 ed.)
Ulrike Landfester, Nina-Louisa Remuss, Kai-Uwe Schrogl, Jean-Claude Worms
R2,923 Discovery Miles 29 230 Ships in 10 - 15 working days

Following the first comprehensive transdisciplinary dialogue on humans in outer space which resulted in "Humans in Outer Space - Interdisciplinary Odysseys", the European Science Foundation (ESF), the European Space Agency (ESA), and the European Space Policy Institute (ESPI) have continued and deepened this transdisciplinary dialogue, which can now be found in Humans in Outer Space - Interdisciplinary Perspectives. Going further than regarding humans as better-than-robot tools for exploration, it investigates the human quest for odysseys beyond Earth's atmosphere and reflects on arising issues related to Europe's role among the States conducting human exploration. It provides perspectives related to governance, management of space exploration, space settlements, the role of astronauts in the future as well as related to the encounter of extraterrestrial life.

Curiosity - An Inside Look at the Mars Rover Mission and the People Who Made it Happen (Paperback): Rod Pyle Curiosity - An Inside Look at the Mars Rover Mission and the People Who Made it Happen (Paperback)
Rod Pyle
R640 Discovery Miles 6 400 Ships in 12 - 19 working days

The story of the people who designed, built, launched, landed, and are now operating the Mars rover "Curiosity"
Award-winning science writer Rod Pyle provides a behind-the-scenes look into the recent space mission to Mars of "Curiosity"--the unmanned rover that is now providing researchers with unprecedented information about the red planet. Pyle follows the team of dedicated scientists whose job it is to explore new vistas on Mars. Readers will also join "Curiosity," the most advanced machine ever sent to another planet, on its journey of discovery. Drawing on his contacts at NASA and the Jet Propulsion Laboratory, the author provides stunning insights into how this enthusiastic team of diverse individuals uses a revolutionary onboard laboratory of chemistry, geology, and physics instruments to unravel the profound secrets of the Red Planet.
Readers will meet: Robert Manning, chief engineer for every rover mission since "Pathfinder"; John Grotzinger, the chief scientist of the entire mission; Vandi Tompkins, the software designer who keeps the rover on track; Bobak Ferdowsi, famed "Mohawk Guy" from Mission Control; Adam Steltzner, the Elvis-like Entry, Descent and Landing Lead; Al Chen, chief of flight dynamics and the voice of JPL during "Curiosity"'s treacherous landing; and many others.
And of course, Pyle describes the adventures of the "Curiosity" rover itself, from landing through the first samples, drilling, and discovering a habitable past on the planet, to reaching the ultimate target: Mount Sharp, in the center of Gale Crater.
America is once again at the forefront of a new space age and "Curiosity" is just the beginning of many exciting new discoveries to come.

Failure Characteristics Analysis and Fault Diagnosis for Liquid Rocket Engines (Hardcover, 1st ed. 2016): Wei Zhang Failure Characteristics Analysis and Fault Diagnosis for Liquid Rocket Engines (Hardcover, 1st ed. 2016)
Wei Zhang
R2,974 Discovery Miles 29 740 Ships in 10 - 15 working days

This book concentrates on the subject of health monitoring technology of Liquid Rocket Engine (LRE), including its failure analysis, fault diagnosis and fault prediction. Since no similar issue has been published, the failure pattern and mechanism analysis of the LRE from the system stage are of particular interest to the readers. Furthermore, application cases used to validate the efficacy of the fault diagnosis and prediction methods of the LRE are different from the others. The readers can learn the system stage modeling, analyzing and testing methods of the LRE system as well as corresponding fault diagnosis and prediction methods. This book will benefit researchers and students who are pursuing aerospace technology, fault detection, diagnostics and corresponding applications.

Space Operations: Inspiring Humankind's Future (Hardcover, 1st ed. 2019): Helene Pasquier, Craig A. Cruzen, Michael... Space Operations: Inspiring Humankind's Future (Hardcover, 1st ed. 2019)
Helene Pasquier, Craig A. Cruzen, Michael Schmidhuber, Young H. Lee
R6,515 Discovery Miles 65 150 Ships in 10 - 15 working days

This book includes a selection of 30 reviewed and enhanced manuscripts published during the 15th SpaceOps Conference held in May 2018 in Marseille, France. The selection was driven by their quality and relevance to the space operations community. The papers represent a cross-section of three main subject areas: Mission Management - management tasks for designing, preparing and operating a particular mission Spacecraft Operations - preparation and implementation of all activities to operate a space vehicle (crewed and uncrewed) under all conditions Ground Operations - preparation, qualification, and operations of a mission dedicated ground segment and appropriate infrastructure including antennas, control centers, and communication means and interfaces This book promotes the SpaceOps Committee's mission to foster the technical interchange on all aspects of space mission operations and ground data systems while promoting and maintaining an international community of space operations experts.

Modeling and Optimization in Space Engineering (Hardcover, 2013 ed.): Giorgio Fasano, Janos D. Pinter Modeling and Optimization in Space Engineering (Hardcover, 2013 ed.)
Giorgio Fasano, Janos D. Pinter
R2,939 Discovery Miles 29 390 Ships in 10 - 15 working days

This volume presents a selection of advanced case studies that address a substantial range of issues and challenges arising in space engineering. The contributing authors are well-recognized researchers and practitioners in space engineering and in applied optimization.

The key mathematical modeling and numerical solution aspects of each application case study are presented in sufficient detail. Classic and more recent space engineering problems including cargo accommodation and object placement, flight control of satellites, integrated design and trajectory optimization, interplanetary transfers with deep space manoeuvres, low energy transfers, magnetic cleanliness modeling, propulsion system design, sensor system placement, systems engineering, space traffic logistics, and trajectory optimization are discussed. Novel points of view related to computational global optimization and optimal control, and to multidisciplinary design optimization are also given proper emphasis. A particular attention is paid also to scenarios expected in the context of future interplanetary explorations.

"Modeling and Optimization in Space Engineering" will benefit researchers and practitioners working on space engineering applications. Academics, graduate and post-graduate students in the fields of aerospace and other engineering, applied mathematics, operations research and optimal control will also find the book useful, since it discusses a range of advanced model development and solution techniques and tools in the context of real-world applications and new challenges."

Sky Static - The Space Debris Crisis (Hardcover): Antony Milne Sky Static - The Space Debris Crisis (Hardcover)
Antony Milne
R2,219 Discovery Miles 22 190 Ships in 10 - 15 working days

Space junk crashing into Earth is a real and escalating danger. Milne provides the first synthesis of the interdisciplinary work of the scientific community, which has been investigating how the satellite industry can be protected from manmade and natural space hazards. The result is an invaluable book for those concerned with space missions and space disasters, those worried about cosmic radiation and its effects on humans, members of the Spaceguard defense movement, and anyone concerned with defense and international cooperation efforts in general.

Tens of millions of objects may exist in space, ranging in size from grains of sand to entire rocket boosters. Many fireballs seen in the skies, often thought to be UFOs, are in fact manmade debris. Plutonium and other highly toxic fuels from failed Russian craft have already contaminated inhabited areas of Central Asia. Natural hazards such as comet particles can travel at 100 times the speed of a bullet and can severely damage satellites. There is also the danger of spaceweather effects, such as cosmic rays, that could interfere with a spacecraft's electronics and interrupt the global transmission of telephones and television.

Interstellar Travel - Purpose and Motivations (Paperback): Les Johnson, Kenneth Roy Interstellar Travel - Purpose and Motivations (Paperback)
Les Johnson, Kenneth Roy
R3,792 R3,438 Discovery Miles 34 380 Save R354 (9%) Ships in 12 - 19 working days

Interstellar Travel: Purpose and Motivations is a comprehensive, technical look at the necessary considerations for interstellar travel addressed by leading experts in the field, from scientists studying possible destinations (exoplanets) and the vast distances between, to those concerned with building institutions and capabilities in society that could sustain such endeavors. In addition to the technical, medical, and anthropological aspects of deep space travel, the ethics and morality of spreading Earth-based life to other worlds is also examined. In the first book of a three-book compilation, Interstellar Travel: Purpose and Motivations offers in-depth, up-to-date and realistic technical and scientific considerations in the pursuit of interstellar travel and is an integral reference for scientists, engineers, researchers and academics working on, or interested in, space development and space technologies. With a renewed interest in space exploration and development evidenced by the rise of the commercial space sector and various governments now planning to send humans back to the moon and to Mars, so also is interest in taking the next steps beyond the Solar System and to the ultimate destination - planets circling other stars.

Astrophysics of the Interstellar Medium (Hardcover, 2013 ed.): Walter J. Maciel Astrophysics of the Interstellar Medium (Hardcover, 2013 ed.)
Walter J. Maciel
R4,615 Discovery Miles 46 150 Ships in 12 - 19 working days

The space between the stars contains a large diversity of objects in which physical processes occur that are fundamental to the structure and evolution of galaxies. This book offers the reader a basic knowledge of these processes and presents simple numeric estimates of the main quantities relevant to the interstellar medium. The main objects that constitute the interstellar space are described, but the emphasis of the book lies in the physical processes occurring in these objects, which may also occur in other astrophysical environments. The book is directed tor graduate as well as advanced undergraduate students of physics and astrophysics.

Geology and Habitability of Terrestrial Planets (Hardcover, 2007 ed.): Kathryn E. Fishbaugh Geology and Habitability of Terrestrial Planets (Hardcover, 2007 ed.)
Kathryn E. Fishbaugh; Introduction by K.E. Fishbaugh; Edited by Phillipe Lognonne; Introduction by D.J. Des Marais, O. Korablev; Edited by …
R5,641 Discovery Miles 56 410 Ships in 10 - 15 working days

Given the universal interest in whether extraterrestrial life has developed or could eventually develop, it is vital that an examination of planetary habitability go beyond simple assumptions. This book has resulted from a workshop at the International Space Science Institute (ISSI) which brought together experts to discuss the multi-faceted problem of how the habitability of a planet co-evolves with the geology of the surface and interior, the atmosphere, and the magnetosphere.

The Sunrise Balloon-Borne Stratospheric Solar Observatory (Hardcover, Edition.): Peter Barthol The Sunrise Balloon-Borne Stratospheric Solar Observatory (Hardcover, Edition.)
Peter Barthol
R2,856 Discovery Miles 28 560 Ships in 10 - 15 working days

The central aim of the "Sunrise "project is to understand the structure and dynamics of the magnetic field in the solar atmosphere. The magnetic field is the source of solar activity, controls the space environment of the Earth and causes the variability of solar irradiance, which may be a significant driver of long-term changes of the terrestrial climate. Interacting with the convective plasma flow, the magnetic field in the solar photosphere develops intense field concentrations on scales below 100 km, which are crucial for the dynamics and energetics of the whole solar atmosphere. These spatial scales cannot be studied systematically from the ground because of image distortions due to atmospheric turbulence. The balloon-borne "Sunrise" telescope has, for the first time, provided measurements of the magnetic structure of the solar atmosphere on its intrinsic spatial and temporal scales. The book gives an overview about the instrumentation and the successful flight in 2009.

Leap of Faith - An Astronaut's Journey Into the Unknown (Paperback): Gordon Cooper, Bruce Henderson Leap of Faith - An Astronaut's Journey Into the Unknown (Paperback)
Gordon Cooper, Bruce Henderson
R503 R472 Discovery Miles 4 720 Save R31 (6%) Ships in 10 - 15 working days

“An exciting insider’s look at Projects Mercury, Gemini and Apollo . . . NASA’s internal politics, disasters, glitches and close calls†by a pioneering astronaut (Publishers Weekly).   Gordon “Gordo†Cooper was one of the original Mercury Seven astronauts, pilot for Apollo X, head of flight crew operations for the United States’ first orbiting space station, and the last American to venture into space alone. Stretching from the dawning days of NASA to the far reaches of the unknown, Cooper’s distinguished career as a record-setting astronaut helped shape America’s space program and blazed a trail for generations to come.   In this astonishing memoir—written with #1 New York Times bestseller Bruce Henderson—Cooper crosses paths with such aviation luminaries as Amelia Earhart, Wiley Post, and German rocket scientist Wernher von Braun; he shares his early days at Edwards Air Force Base and the endeavors that became the basis for The Right Stuff; he takes us inside NASA with candid accounts of his defeats and accomplishments; he reflects on the triumphs and tragedies of his heroic colleagues; and he finally reveals the reasons behind his belief in extraterrestrial intelligence, including the US military’s long-standing UFO cover-ups.   Buckle yourself in for a breathtaking ride because in Leap of Faith, Gordon Cooper takes readers to places they’ve never been before.  

Handbook of Aircraft Technology (Hardcover): Natalie Spagner Handbook of Aircraft Technology (Hardcover)
Natalie Spagner
R2,253 Discovery Miles 22 530 Ships in 12 - 19 working days
Putting the "I" in IHY - The United Nations Report for the International Heliophysical Year 2007 (Hardcover, 2009 ed.): Barbara... Putting the "I" in IHY - The United Nations Report for the International Heliophysical Year 2007 (Hardcover, 2009 ed.)
Barbara J. Thompson, Natchimuthuk Gopalswamy, Joseph M. Davila, Hans J. Haubold
R4,414 Discovery Miles 44 140 Ships in 10 - 15 working days

Putting the "I" in IHY This book is about international cooperation. It demonstrates how the power of scienti?c imagination and investigation can bring together people form all continents in almost all countries around the globe. In presenting this impressive result, we can understand, how much unifying force the quest for understanding our universe and using outer space for that purpose have. Astronomy is far away from being a "political" area of science. But is has enormous political effects - and all of these effects are positive. This book about the international aspects and achievements of the "International Heliophysical Year (IHY) 2007" can be regarded as a compendium of the fertile impacts of conducting research in this ?eld. The main focus, as the title implicates, is the international cooperation, which has emerged from this grassroots initiative. North and South, industrialized and developing countries have been coordinating their efforts and have been learning from each other in a mutual partnership under a joint understanding of sharing the scienti?c bene?ts. Through this, trans-border networks have been created and scienti?c as well as cultural exchange took place.

Hamiltonian Perturbation Solutions for Spacecraft Orbit Prediction - The Method of Lie Transforms (Hardcover): Martin Lara Hamiltonian Perturbation Solutions for Spacecraft Orbit Prediction - The Method of Lie Transforms (Hardcover)
Martin Lara
R5,685 Discovery Miles 56 850 Ships in 12 - 19 working days

Analytical solutions to the orbital motion of celestial objects have been nowadays mostly replaced by numerical solutions, but they are still irreplaceable whenever speed is to be preferred to accuracy, or to simplify a dynamical model. In this book, the most common orbital perturbations problems are discussed according to the Lie transforms method, which is the de facto standard in analytical orbital motion calculations.

Theory and Design Methods of Special Space Orbits (Hardcover, 1st ed. 2017): Yasheng Zhang, Yanli Xu, Haijun Zhou Theory and Design Methods of Special Space Orbits (Hardcover, 1st ed. 2017)
Yasheng Zhang, Yanli Xu, Haijun Zhou
R4,426 R3,426 Discovery Miles 34 260 Save R1,000 (23%) Ships in 12 - 19 working days

This book focuses on the theory and design of special space orbits. Offering a systematic and detailed introduction to the hovering orbit, spiral cruising orbit, multi-target rendezvous orbit, initiative approaching orbit, responsive orbit and earth pole-sitter orbit, it also discusses the concept, theory, design methods and application of special space orbits, particularly the design and control method based on kinematics and astrodynamics. In addition the book presents the latest research and its application in space missions. It is intended for researchers, engineers and postgraduates, especially those working in the fields of orbit design and control, as well as space-mission planning and research.

Space Fostering African Societies - Developing the African Continent through Space, Part 1 (Hardcover, 1st ed. 2020): Annette... Space Fostering African Societies - Developing the African Continent through Space, Part 1 (Hardcover, 1st ed. 2020)
Annette Froehlich
R2,921 Discovery Miles 29 210 Ships in 10 - 15 working days

This book provides detailed insights into how space and its applications are, and can be, used to support the development of the full range and diversity of African societies, as encapsulated in the African Union's Agenda 2063. Like previous books in the "Southern Space Studies" series, it focuses on the role of space in supporting the UN Sustainable Development Goals in Africa, but it covers an even more extensive array of relevant and timely topics addressing all facets of African development. It demonstrates that, while great achievements have been made in recent years in terms of economic and social development, which has lifted many of Africa's people out of poverty, there is still much that needs to be done to fulfill the basic needs of Africa's citizens and afford them the dignity they deserve: to this end space is already being employed in diverse fields of human endeavor to serve Africa's goals for its future, but there is much room for further incorporation of space systems and data. Providing a comprehensive overview of the role space is playing in achieving Africa's developmental aspirations, the book is of great interest to both students and professionals in fields such as space studies, international relations, governance, social and rural development, and many others.

Can Democracies Fly in Space? - The Challenge of Revitalizing the U.S. Space Program (Hardcover, New): W. Kay Can Democracies Fly in Space? - The Challenge of Revitalizing the U.S. Space Program (Hardcover, New)
W. Kay
R2,783 Discovery Miles 27 830 Ships in 10 - 15 working days

Over the last two decades, the image of the U.S. space program has become seriously tarnished. Its problems have ranged from massive cost overruns to serious program delays to catastrophic mission failures. The space program, once the most prominent symbol of American scientific and technological preeminence, now seems but one more example of government bumbling, extravagance, and waste. In this study, Kay examines the recent problems of the space program and finds that NASA's failures, like its earlier successes, are ultimately traceable to the way the American political system operates. Asking can democracies fly in space?, the author suggests that the traditional workings of democratic politics actually exacerbates those very features of space projects--size, expense, and complexity--that make their development so difficult in the first place.

Return to the Moon - Exploration, Enterprise, and Energy in the Human Settlement of Space (Hardcover, 1st ed. 2006. Corr. 2nd... Return to the Moon - Exploration, Enterprise, and Energy in the Human Settlement of Space (Hardcover, 1st ed. 2006. Corr. 2nd printing 2006)
Harrison Schmitt
R1,384 R1,191 Discovery Miles 11 910 Save R193 (14%) Ships in 10 - 15 working days

Former NASA Astronaut Harrison Schmitt advocates a private, investor-based approach to returning humans to the Moon-to extract Helium 3 for energy production, to use the Moon as a platform for science and manufacturing, and to establish permanent human colonies there in a kind of stepping stone community on the way to deeper space. With governments playing a supporting role-just as they have in the development of modern commercial aeronautics and agricultural production-Schmitt believes that a fundamentally private enterprise is the only type of organization capable of sustaining such an effort and, eventually, even making it pay off.

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