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A comprehensive theory of selective opacity effects—configurations in which syntactic domains are opaque to some processes but transparent to others—within a Minimalist framework. In this book, Stefan Keine investigates in detail “selective opacity”— configurations in which syntactic domains are opaque to some processes but transparent to others—and develops a comprehensive theory of these syntactic configurations within a contemporary Minimalist framework. Although such configurations have traditionally been analyzed in terms of restrictions on possible sequences of movement steps, Keine finds that analogous restrictions govern long-distance dependencies that do not involve movement. He argues that the phenomenon is more widespread and abstract than previously assumed. He proposes a new approach to such effects, according to which probes that initiate the operation Agree are subject to “horizons,” which terminate their searches. Selective opacity effects raise important questions about the nature of locality in natural language, the representation of movement-type asymmetries, correlations between clause structure and locality, and possible interactions between syntactic dependencies. With a focus on in-depth case studies of Hindi-Urdu and German, Keine offers detailed investigations of movement dependencies, long-distance agreement, wh-dependencies, the A/A' distinction, restructuring, freezing effects, successive cyclicity, and phase theory. Keine's account offers a thorough understanding of selective opacity and the systematic overarching generalizations to which it is subject.
This dissertation develops a comprehensive theory of 'selective opacity', syntactic configurations in which one and the same syntactic domain is transparent to some operations, but opaque to others. The prime example of selective opacity are finite clauses in English, which are transparent to A'-movement, but opaque to A-movement. Following and extending the previous literature, I argue that selective opacity extends beyond the A/A'-distinction and even to syntactic dependencies that do not involve movement. Empirically, I argue that selective opacity exhibits intriguing meta-generalizations, which become evident once selective opacity across constructions and languages is treated as a uniform phenomenon. These two meta-generalizations are what I call 'Upward Entailment' and the 'Height-Locality Connection'. Upward Entailment states that if a clause of a given structural size is opaque to some operation, then structurally larger clauses are likewise opaque to this operation. The Height-Locality Connection states that the locality of a movement type is related to the height of the landing site of that movement type within the clausal spine. Specifically, movement types that land in a structurally high position are able to escape more domains than movement types that target a lower position. The core theoretical proposal is that selective opacity is the manifestation of a constraint on the locality of probes. I propose that probes have characteristic 'horizons', which delimit their search space. Crucially, horizons can differ between probes. As a result, the opacity of a domain can be relative to the probe conducting the search. I argue that this is what underlies locality differences between movement types, between movement and agreement, and between types of dependencies that do not involve movement. I demonstrate how a wide array of selective opacity effects and complex interactions between them can be derived. I also demonstrate how meta-generalizations of selective opacity emerge from the account. Finally, I explore the consequences of horizons for more familiar concepts of syntactic locality like phases. I show that horizons coexist with CP phases, but that they are incompatible with vP phases. Independent psycholinguistic evidence for this conclusion is provided and I reassess previous arguments in support of vP phases.
The first complete, up-to-date history of space probe exploration. In just 50 years, space exploration has advanced from the Luna 1, the first artificial object to overcome Earth's gravitational field, to the New Horizons Mission, which will reach Pluto in 2015. Progress has been spectacular, and it bodes well for the remarkable achievements to come. Space Probes is the first complete and fully illustrated history of the international space exploration program. Thoroughly up to date, it is organized by destination and includes every space probe launched by all countries active in space exploration -- the United States, the USSR/Russia, the European Union, Japan, China and India. Each probe is described as to its objective, its technology, the hurdles overcome, the successes and failures of the mission, the information gained and the lessons learned. Fascinating photographs and technical drawings give an inside view of each mission, and special features focus on key engineers and physicists and the fruits of their research. After a section on the history of astronomy, Space Probes covers missions to: The moon, the first objective Venus, our sister planet Mars, the red planet Jupiter, Saturn, Uranus and Neptune, the giant planets Mercury The sun Comets Asteroids and the dwarf planets Future missions. The book also includes sections on the Apollo Space Program, the USSR-USA space race and a cross-referenced chronological index of all the probes. Engaging and accessible, Space Probes is a comprehensive and expertly researched encyclopedia of humanity's space explorations, an adventure that has not finished astonishing us.
With Space Probes: Exploring Beyond Earth, young readers can learn what a space probe is, what planets have been explored, what is a rover, and what future missions are planned. Includes a "How-to" Young Astronomer spread, and Internet links that act as stepping-stones to lead inquiring young minds further into the high-tech universe of space exploration. Young readers will thrill at the exciting color photographs of deep space and the machines that probe it.
Probes can explore the depths of space in ways that would kill human beings. The information they provide can spur countless innovations here on Earth. Learn how probes work and the exciting possibilities that their discoveries may inspire.
Called "spellbinding" (Scientific American) and "thrilling...a future classic of popular science" (PW), the up close, inside story of the greatest space exploration project of our time, New Horizons’ mission to Pluto, as shared with David Grinspoon by mission leader Alan Stern and other key players. On July 14, 2015, something amazing happened. More than 3 billion miles from Earth, a small NASA spacecraft called New Horizons screamed past Pluto at more than 32,000 miles per hour, focusing its instruments on the long mysterious icy worlds of the Pluto system, and then, just as quickly, continued on its journey out into the beyond. Nothing like this has occurred in a generation—a raw exploration of new worlds unparalleled since NASA’s Voyager missions to Uranus and Neptune—and nothing quite like it is planned to happen ever again. The photos that New Horizons sent back to Earth graced the front pages of newspapers on all 7 continents, and NASA’s website for the mission received more than 2 billion hits in the days surrounding the flyby. At a time when so many think that our most historic achievements are in the past, the most distant planetary exploration ever attempted not only succeeded in 2015 but made history and captured the world’s imagination. How did this happen? Chasing New Horizons is the story of the men and women behind this amazing mission: of their decades-long commitment and persistence; of the political fights within and outside of NASA; of the sheer human ingenuity it took to design, build, and fly the mission; and of the plans for New Horizons’ next encounter, 1 billion miles past Pluto in 2019. Told from the insider’s perspective of mission leader Dr. Alan Stern and others on New Horizons, and including two stunning 16-page full-color inserts of images, Chasing New Horizons is a riveting account of scientific discovery, and of how much we humans can achieve when people focused on a dream work together toward their incredible goal.