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  1. James L. Anderson (1985). Gravitational Radiation, Source Behavior, and the Method of Matched Asymptotic Expansions. Foundations of Physics 15 (4):411-418.
    It is conjectured that a suitably modified Bondi-type expansion of the gravitational field in the radiation zone is a rapidly convergent series. It is also conjectured that the source behavior in the inner zone is insensitive to the initial conditions imposed on the gravitational field in solving the initial-value problem in this zone. Consequences of these conjectures for the problem of relating source motion to the Bondi news function are discussed.
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  2. Matthew Anderson & Richard A. Matzner (2005). Extended Lifetime in Computational Evolution of Isolated Black Holes. Foundations of Physics 35 (9):1477-1495.
    Solving the 4-d Einstein equations as evolution in time requires solving equations of two types: the four elliptic initial data (constraint) equations, followed by the six second-order evolution equations. Analytically the constraint equations remain solved under the action of the evolution, and one approach is to simply monitor them (unconstrained evolution). The problem of the 3-d computational simulation of even a single isolated vacuum black hole has proven to be remarkably difficult. Recently, we have become aware of two publications that (...)
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  3. Gottfried Anger, James Paul Wesley & Hans Kaegelmann (eds.) (2005). Was von Moderner Physik Bleibt Und Fällt. Argo.
    1. Bd. Die Relativitätstheorie fällt : physikalische, philosophische, wissenschaftssoziologische und allgemeinverständliche Korrektur : hundert Jahre Kultus des Irrtums sind genug -- 3. Bd. Die Urknalltheorie fällt.
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  4. Huzihiro Araki & Takaaki Tabuchi (1997). Generalization of Krinsky's Commutativity Proof of Transfer Matrices with Hamiltonians. Foundations of Physics 27 (11):1485-1494.
    The commutativity of the 1-dimensional XY-h type Hamiltonian and the transfer matrix of a 2-dimensional spin-lattice model constructed from an R-matrix is studied by Sutherland's method. We generalize Krinsky's result to more general Hamiltonians and more general R matrices, and we obtain a generic condition on their parameters for the commutativity, which defines an irreducible algebraic manifold in the parameter space.
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  5. H. I. Arcos, C. S. O. Mayor, G. Otalora & J. G. Pereira (2012). Spin-2 Fields and Helicity. Foundations of Physics 42 (10):1339-1349.
    By considering the irreducible representations of the Lorentz group, an analysis of the different spin-2 waves is presented. In particular, the question of the helicity is discussed. It is concluded that, although from the point of view of representation theory there are no compelling reasons to choose between spin-2 waves with helicity σ=±1 or σ=±2, consistency arguments of the ensuing field theories favor waves with helicity σ=±1.
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  6. Mayeul Arminjon (2004). Gravity as Archimedes' Thrust and a Bifurcation in That Theory. Foundations of Physics 34 (11):1703-1724.
    Euler’s interpretation of Newton’s gravity (NG) as Archimedes’ thrust in a fluid ether is presented in some detail. Then a semi-heuristic mechanism for gravity, close to Euler’s, is recalled and compared with the latter. None of these two ‘‘gravitational ethers’’ can obey classical mechanics. This is logical since the ether defines the very reference frame, in which mechanics is defined. This concept is used to build a scalar theory of gravity: NG corresponds to an incompressible ether, a compressible ether leads (...)
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  7. Halton Arp (1998). Evolution of Quasars Into Galaxies and its Implications for the Birth and Evolution of Matter. Apeiron 5 (3-4):135.
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  8. J. L. F. Barbón & E. Rabinovici (2003). Remarks on Black Hole Instabilities and Closed String Tachyons. Foundations of Physics 33 (1):145-165.
    Physical arguments stemming from the theory of black-hole thermodynamics are used to put constraints on the dynamics of closed-string tachyon condensation in Scherk–Schwarz compactifications. A geometrical interpretation of the tachyon condensation involves an effective capping of a noncontractible cycle, thus removing the very topology that supports the tachyons. A semiclassical regime is identified in which the matching between the tachyon condensation and the black-hole instability flow is possible. We formulate a generalized correspondence principle and illustrate it in several different circumstances: (...)
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  9. Andrei Barvinsky, Saurya Das & Gabor Kunstatter (2002). Discrete Spectra of Charged Black Holes. Foundations of Physics 32 (12):1851-1862.
    Bekenstein proposed that the spectrum of horizon area of quantized black holes must be discrete and uniformly spaced. We examine this proposal in the context of spherically symmetric charged black holes in a general class of gravity theories. By imposing suitable boundary conditions on the reduced phase space of the theory to incorporate the thermodynamic properties of these black holes and then performing a simplifying canonical transformation, we are able to quantize the system exactly. The resulting spectra of horizon area, (...)
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  10. Yann Benétreau-Dupin (2015). Probabilistic Reasoning in Cosmology. Dissertation, The University of Western Ontario
    Cosmology raises novel philosophical questions regarding the use of probabilities in inference. This work aims at identifying and assessing lines of arguments and problematic principles in probabilistic reasoning in cosmology. -/- The first, second, and third papers deal with the intersection of two distinct problems: accounting for selection effects, and representing ignorance or indifference in probabilistic inferences. These two problems meet in the cosmology literature when anthropic considerations are used to predict cosmological parameters by conditionalizing the distribution of, e.g., the (...)
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  11. Geoffrey Berg (2013). Philosophy for Aliens: Discovering the Philosophical Black Hole. Intellect Publishing.
    Geoffrey Berg finds a previously undiscovered 'black hole' at the very core of Philosophy. This must cause extensive 'universal uncertainty' that is insurmountable by any human or any intelligence.This book strips away common human delusions about 'goodness', God and the ultimate knowability of the Universe. It focuses on the logical limitations to knowledge for humans, aliens and even artificial intelligences.The book is original and radical, yet entirely logical in its approach. It presents and justifies in quite simple language an entirely (...)
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  12. R. Bernabei, P. Belli, F. Cappella, R. Cerulli, C. J. Dai, A. D'Angelo, H. L. He, A. Incicchitti, H. H. Kuang, X. H. Ma, F. Montecchia, F. Nozzoli, D. Prosperi, X. D. Sheng & Z. P. Ye (2010). Results From DAMA/LIBRA at Gran Sasso. Foundations of Physics 40 (7):900-916.
    The DAMA project is an observatory for rare processes and it is operative deep underground at the Gran Sasso National Laboratory of the I.N.F.N. In particular, the DAMA/LIBRA (Large sodium Iodide Bulk for RAre processes) set-up consists of highly radiopure NaI(Tl) detectors for a total sensitive exposed mass of ≃250 kg. Recent results, obtained by this set-up by exploiting the model independent annual modulation signature of Dark Matter (DM) particles, have confirmed and improved those obtained by the former DAMA/NaI experiment. (...)
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  13. Peter Bokulich (2011). Interactions and the Consistency of Black Hole Complementarity. International Studies in the Philosophy of Science 25 (4):371-386.
    Presentations of black hole complementarity by van Dongen and de Haro, as well as by 't Hooft, suffer from a mistaken claim that interactions between matter falling into a black hole and the emitted Hawking-like radiation should lead to a failure of commutativity between space-like-related observables localized inside and outside the black hole. I show that this conclusion is not supported by our standard understanding of quantum interactions. We have no reason to believe that near-horizon interactions will threaten microcausality. If (...)
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  14. H. -H. V. Borzeszkowski (2000). Black Hole Physics. Basic Concepts and New Developments. Foundations of Physics 30 (8):1317-1320.
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  15. H. G. Callaway (2014). Arthur S. Eddington, The Nature of the Physical World, An Annotated Edition. Cambridge Scholars Press.
    Arthur S. Eddington, FRS, (1882–1944) was one of the most prominent British scientists of his time. He made major contributions to astrophysics and to the broader understanding of the revolutionary theories of relativity and quantum mechanics. He is famed for his astronomical observations of 1919, confirming Einstein’s prediction of the curving of the paths of starlight, and he was the first major interpreter of Einstein’s physics to the English-speaking world. His 1928 book, The Nature of the Physical World, here re-issued (...)
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  16. Carl E. Carlson & Ian J. Swanson (2000). Casimir Energy in Astrophysics: Gamma-Ray Bursts From QED Vacuum Transitions. [REVIEW] Foundations of Physics 30 (5):775-783.
    Motivated by analogous applications to sonoluminescence, neutron stars mergers are examined in the context of Schwinger's dynamical Casimir effect. When the dielectric properties of the QED vacuum are altered through the introduction of dense matter, energy shifts in the zero-point fluctuations can appear as photon bursts at gamma-ray frequencies. The amount of radiation depends upon the properties and amount of matter in motion and the suddenness of the transition. It is shown that the dynamical Casimir effect can convert sufficient energy (...)
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  17. Adriano Carugo & Ludovico Geymonat (eds.) (1958). Discorsi e dimostrazioni matematiche intorno a due nuove scienze (1638). Einaudi.
  18. Milan M. Ćirković (2006). Too Early? On the Apparent Conflict of Astrobiology and Cosmology. Biology and Philosophy 21 (3):369-379.
    An interesting consequence of the modern cosmological paradigm is the spatial infinity of the universe. When coupled with naturalistic understanding of the origin of life and intelligence, which follows the basic tenets of astrobiology, and with some fairly incontroversial assumptions in the theory of observation selection effects, this infinity leads, as Ken Olum has recently shown, to a paradoxical conclusion. Olum's paradox is related, to the famous Fermi's paradox in astrobiology and “SETI” studies. We, hereby, present an evolutionary argument countering (...)
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  19. G. L. Comer (2002). Do Neutron Star Gravitational Waves Carry Superfluid Imprints? Foundations of Physics 32 (12):1903-1942.
    Isolated neutron stars undergoing non-radial oscillations are expected to emit gravitational waves in the kilohertz frequency range. To date, radio astronomers have located about 1,300 pulsars, and can estimate that there are about 2×108 neutron stars in the galaxy. Many of these are surely old and cold enough that their interiors will contain matter in the superfluid or superconducting state. In fact, the so-called glitch phenomenon in pulsars (a sudden spin-up of the pulsar's crust) is best described by assuming the (...)
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  20. G. Contopoulos (2001). The Development of Nonlinear Dynamics in Astronomy. Foundations of Physics 31 (1):89-114.
    We present the historical development of Nonlinear Dynamical Astronomy with emphasis on the “third integral” and its applications. The new era started with the use of computers, and of formal analytical developments in the spirit of Poincaré. Most dynamical systems were found to contain both ordered and chaotic orbits. The transition from order to chaos is discussed. Recent developments refer to the dynamical spectra, integrals of notion in self-consistent models, systems of 3 or more degrees of freedom, chaos in relativity (...)
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  21. Alexander Cox, Christopher Nebelecky, Ronald Rudnicki, William Tagliaferri, John L. Crassidis & Barry Smith (2016). The Space Object Ontology. In 19th International Conference on Information Fusion (FUSION 2016). IEEE.
    Achieving space domain awareness requires the identification, characterization, and tracking of space objects. Storing and leveraging associated space object data for purposes such as hostile threat assessment, object identification, and collision prediction and avoidance present further challenges. Space objects are characterized according to a variety of parameters including their identifiers, design specifications, components, subsystems, capabilities, vulnerabilities, origins, missions, orbital elements, patterns of life, processes, operational statuses, and associated persons, organizations, or nations. The Space Object Ontology provides a consensus-based realist framework (...)
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  22. John Cramer, SN1987A - Supernova Astrophysics Grows Up.
    unlikely name of Sanduleak -69 o202 had exploded, becoming type II supernova SN1987A. The discovery was broadcast to a data-hungry world, and the astronomy/astrophysics community has been in an uproar ever since. Sanduleak -69 o202 before exploding had a mass 15-20 times greater than that of our sun and was located in the Large Magellanic Cloud, a sort of suburb of our galaxy some 160,000 light years distant. To the despair of residents of North America, SN1987A is visible only in (...)
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  23. Rosa Doran, Francisco S. N. Lobo & Paulo Crawford (2008). Interior of a Schwarzschild Black Hole Revisited. Foundations of Physics 38 (2):160-187.
    The Schwarzschild solution has played a fundamental conceptual role in general relativity, and beyond, for instance, regarding event horizons, spacetime singularities and aspects of quantum field theory in curved spacetimes. However, one still encounters the existence of misconceptions and a certain ambiguity inherent in the Schwarzschild solution in the literature. By taking into account the point of view of an observer in the interior of the event horizon, one verifies that new conceptual difficulties arise. In this work, besides providing a (...)
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  24. Paul Forman, J. J. O. Palgen, Asger Aaboe & Stephen Toulmin (1968). The Astrophysics of Berossos the Chaldean. Isis 59 (1):91-94.
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  25. Bernard R. Goldstein (1992). Book Review:The General History of Astronomy. Vol. 2: Planetary Astronomy From the Renaissance to the Rise of Astrophysics. Part A: Tycho Brahe to Newton Rene Taton, Curtis Wilson. [REVIEW] Philosophy of Science 59 (4):698-.
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  26. Eric P. M. Grist (1999). Hidden Implications of Clumps and Masses. Acta Biotheoretica 47 (1):59-66.
    In a recent study on the spawn of the common frog surveyed over several breeding sites, a significant linear relationship. An open question exists, as to why such a strong linear relationship is to be found. Using elementary physics, I suggest some factors which may underly the observed linearity and how it may reveal characteristics other than size of a breeding population. A follow-up experiment is outlined to test for these in the field and some ecological implications are discussed.
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  27. J. L. Heilbron (ed.) (2005). The Oxford Guide to the History of Physics and Astronomy. Oxford University Press.
    With over 150 alphabetically arranged entries about key scientists, concepts, discoveries, technological innovations, and learned institutions, the Oxford Guide to Physics and Astronomy traces the history of physics and astronomy from the Renaissance to the present. For students, teachers, historians, scientists, and readers of popular science books such as Galileo's Daughter, this guide deciphers the methods and philosophies of physics and astronomy as well as the historical periods from which they emerged. Meant to serve the lay reader and the professional (...)
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  28. Robert Hudson (2009). The Methodological Strategy of Robustness in the Context of Experimental WIMP Research. Foundations of Physics 39 (2):174-193.
    According to the methodological principle called ‘robustness’, empirical evidence is more reliable when it is generated using multiple, independent (experimental) routes that converge on the same result. As it happens, robustness as a methodological strategy is quite popular amongst philosophers. However, despite its popularity, my goal here is to criticize the value of this principle on historical grounds. My historical reasons take into consideration some recent history of astroparticle physics concerning the search for WIMPs (weakly interacting massive particles), one of (...)
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  29. Ted Jacobson & Aron C. Wall (2010). Black Hole Thermodynamics and Lorentz Symmetry. Foundations of Physics 40 (8):1076-1080.
    Recent developments point to a breakdown in the generalized second law of thermodynamics for theories with Lorentz symmetry violation. It appears possible to construct a perpetual motion machine of the second kind in such theories, using a black hole to catalyze the conversion of heat to work. Here we describe and extend the arguments leading to that conclusion. We suggest the inference that local Lorentz symmetry may be an emergent property of the macroscopic world with origins in a microscopic second (...)
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  30. Martin Johnson (1947). Time, Knowledge, and the Nebulae. New York: Dover Publications.
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  31. Martin Christopher Johnson (1945). Time, Knowledge and the Nebulae. London: Faber & Faber.
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  32. Georgios Ioannou Kontopoulos, N. Spyrou, L. Vlahos & European Astrophysics Doctoral Network (1994). Galactic Dynamics and N-Body Simulations Lectures Held at the Astrophysics School Vi, Organized by the European Astrophysics Doctoral Network in Thessaloniki, Greece, 13-23 July 1993. [REVIEW]
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  33. B. P. Kosyakov (2008). Black Holes: Interfacing the Classical and the Quantum. Foundations of Physics 38 (7):678-694.
    The central idea of this paper is that forming the black hole horizon is attended with the transition from the classical regime of evolution to the quantum one. We offer and justify the following criterion for discriminating between the classical and the quantum: creations and annihilations of particle-antiparticle pairs are impossible in the classical reality but possible in the quantum reality. In flat spacetime, we can switch from the classical picture of field propagation to the quantum picture by changing the (...)
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  34. Wolfgang Kundt (1993). The Most Energetic Processes in the Universe. Foundations of Physics 23 (6):931-948.
    Some key problems of present-day astrophysics are critically revisited. Particular consideration is given to (1) supernova explosions, their mechanism, their progenitors, and their stellar remnants; (2) a radiation-transfer interpretation of supernova light curves; (3) the dearth of supernova-neutron star associations; (4) the central engines and jet-formation mechanisms of the four classes of bipolar-flow sources, in particular of the active galactic nuclei and the young stellar objects; (5) a critical discussion of the different ways in which cosmic rays are thought to (...)
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  35. A. Kyrala (1974). Selection Rules, Causality, and Unitarity in Statistical and Quantum Physics. Foundations of Physics 4 (1):31-51.
    The integrodifferential equations satisfied by the statistical frequency functions for physical systems undergoing stochastic transitions are derived by application of a causality principle and selection rules to the Markov chain equations. The result equations can be viewed as generalizations of the diffusion equation, but, unlike the latter, they have a direct bearing onactive transport problems in biophysics andcondensation aggregation problems of astrophysics and phase transition theory. Simple specific examples of the effects of severe selection rules, such as the relaxational Boltzmann (...)
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  36. James Lindesay (2007). Coordinates with Non-Singular Curvature for a Time Dependent Black Hole Horizon. Foundations of Physics 37 (8):1181-1196.
    A naive introduction of a dependency of the mass of a black hole on the Schwarzschild time coordinate results in singular behavior of curvature invariants at the horizon, violating expectations from complementarity. If instead a temporal dependence is introduced in terms of a coordinate akin to the river time representation, the Ricci scalar is nowhere singular away from the origin. It is found that for a shrinking mass scale due to evaporation, the null radial geodesics that generate the horizon are (...)
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  37. Dan Maoz (2007). Astrophysics in a Nutshell. Princeton University Press.
    This book fills that void and is a welcome addition on that count."--Ronald F. Webbink, University of Illinois, Urbana-Champaign.
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  38. Gordon McCabe, Mathematics and Explanation in Astronomy and Astrophysics.
    The purpose of this paper is to expound and clarify the mathematics and explanations commonly employed in certain notable areas of astronomy and astrophysics. The first section concentrates upon the mathematics employed to represent and understand stellar structure and evolution. The second section analyses two different explanations for the structure of spiral galaxies.
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  39. Ernan McMullin (2011). Kepler: Moving the Earth. Hopos: The Journal of the International Society for the History of Philosophy of Science 1 (1):3-22.
    The discrepancy between the Aristotelian and the Ptolemaic astronomies led many medievals to regard the latter (and mathematical astronomy generally) as no more than a calculational device. This was the challenge that Copernicus and Kepler had to meet: How was one to show that a mathematically expressed astronomy could indicate that the earth really moves? Copernicus pointed to features of the planetary motions that he could explain but that Ptolemy could not. Kepler went much further. His account of the planetary (...)
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  40. Starks Michael (2016). Review of Hyperspace by Michio Kaku (1994). In Michael Starks (ed.), Philosophy, Human Nature and the Collapse of Civilization Articles and Reviews 2006-2016 by Michael Starks 662p (2016). Michael Starks. pp. 620-626.
    "There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact" Mark Twain-Life on the Mississippi -/- This is a lovely book full of fascinating info on the evolution of physics and cosmology. Its main theme is how the idea of higher dimensional geometry created by Riemann, recently extended to 24 dimensions by string theory, has revolutionized our understanding of the universe. Everyone knows that Riemann created multidimensional geometry in 1854 (...)
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  41. Alexander P. D. Mourelatos (2008). The Cloud-Astrophysics of Xenophanes and Ionian Material Monism. In Patricia Curd & Daniel W. Graham (eds.), The Oxford Handbook of Presocratic Philosophy. Oxford University Press.
    This article discusses Xenophanes' “cloud astro-physics”. It analyses and explains all heavenly and meteorological phenomena in terms of clouds. It provides a view of this newer Xenophanes, who is now being recognized as an important philosopher-scientist in his own right and a crucial figure in the development of critical thought about human knowledge and its objects in the next generation of Presocratic thinkers. Xenophanes' account has been preserved in Aëtius, the doxographic compendium reconstructed by Hermann Diels late in the nineteenth (...)
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  42. E. N. Parker (1995). Plasma Physics: An Introduction to the Theory of Astrophysical, Geophysical, and Laboratory Plasma. Foundations of Physics 25:517-517.
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  43. S. J. Prokhovnik & W. T. Morris (1989). The Physical Basis of Astronomical Aberration. Foundations of Physics 19 (5):531-539.
    The mechanism of stellar aberration was explained and formulated by Bradley in terms of the existence of a unique reference frame for light propagation. However, Einstein's denial of the existence of such a frame appears to undermine Bradley's interpretation of the phenomenon. It is suggested that the recent evidence for a cosmologically-based inertial reference frame provides a new physical basis for Bradley's explanation in a manner consistent with the requirements of special relativity. It is shown that a “delay” effect is (...)
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  44. D. J. Raine (1986). GINGERICH, OWEN (Ed.) [1984]: Astrophysics and Twentieth-Century Astronomy to 1950, The General History of Astronomy, Vol. 4A. Cambridge University Press. Pp. X+198 (ISBN 0-521-24256-8). [REVIEW] British Journal for the Philosophy of Science 37 (4):510-513.
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  45. Carlo Rovelli (2011). Che Cos'è la Scienza: La Rivoluzione di Anassimandro. Mondadori Università.
    All human civilizations have thought that the world was made of sky above and the Earth below. All except one. For the Greeks, the Earth was a rock floating in space, and under the earth there was no ground, no turtles, nor the gigantic columns of which the Bible speaks. How did the Greeks understand that the Earth is suspended in nothingness? Who understood this and how? It is this unique "scientific revolution" of Anaximander of which the author speaks, which (...)
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  46. Robert J. Rovetto (2016). The Space Object Ontology. 2016 1.
    This paper develops the ontology of space objects for theoretical and computational ontology applied to the space (astronautical/astronomical) domain. It follows “An ontological architecture for Orbital Debris Data” (Rovetto, 2015) and “Preliminaries of a Space Situational Awareness Ontology” (Rovetto, Kelso, 2016). Important considerations for developing a space object ontology, or more broadly, a space domain ontology are presented. The main category term ‘Space Object’ is analyzed from a philosophical perspective. The ontological commitments of legal definitions for artificial space objects are (...)
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  47. Robert J. Rovetto (2016). Defending Spaceflight - The Echoes of Apollo. Space Policy 38:68-78.
    This paper defends, and emphasizes the importance of, spaceflight, broadly construed to include human and unmanned spaceflight, space science, exploration and development. Within this discourse, I provide counter-replies to remarks by physicist Dr. Steven Weinberg against my previous support of human spaceflight. In this defense of peaceful spaceflight I draw upon a variety of sources. Although a focus is human spaceflight, human and unmanned modes must not be treated as an either-or opposition. Rather, each has a critical role to play (...)
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  48. Robert J. Rovetto (2016). Orbital Space Environment and Space Situational Awareness Domain Ontology. In Stefano Borgo, Jean-Rémi Bourguet & Adrien Barton (eds.), CEUR workshop proceedings of The Joint Ontology Workshops, with the 9th International Conference of Formal Ontology for Information Systems (FOIS), Early Career Symposium. CEUR Scientific Workshops.
    A short summary paper of my Orbital Space Domain Ontology project (purl.org/space-ontology), originally conceived in 2011. Since then I've sought (without success) opportunities to realize it (either as a PhD or other degree thesis; or in an employment position) toward my original passion of entering the space sector and gaining further space education. Since then persons in the relevant space disciplines have seen the potential in it, and unfortunately some have taken advantage of my ideas yet excluded me from work. (...)
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  49. Robert J. Rovetto (2015). An Ontological Architecture for Orbital Debris Data. Earth Science Informatics:1-16.
    The orbital debris problem presents an opportunity for inter-agency and international cooperation toward the mutually beneficial goals of debris prevention, mitigation, remediation, and improved space situational awareness (SSA). Achieving these goals requires sharing orbital debris and other SSA data. Toward this, I present an ontological architecture for the orbital debris and broader SSA domain, taking steps in the creation of an orbital debris ontology (ODO). The purpose of this ontological system is to (I) represent general orbital debris and SSA domain (...)
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  50. Robert J. Rovetto & T. S. Kelso (2016 Feb). Preliminaries of a Space Situational Awareness Ontology. In Renato Zanetti, Ryan P. Russell, Martin T. Oximek & Angela L. Bowes (eds.), Proceedings of AAS/AIAA Spaceflight Mechanics Meeting, in Advances in the Astronautical Sciences. Univelt Inc.. pp. 4177-4192.
    Space situational awareness (SSA) is vital for international safety and security, and for the future of space travel. The sharing of SSA data and information should improve the state of global SSA for planetary defense and spaceflight safety. I take steps toward a Space Situational Awareness (SSA) Ontology, and outline some central objectives, requirements and desiderata in the ontology development process for this domain. The purpose of this ontological system is to explore the potential for the ontology research topic to (...)
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