95
95
Feb 23, 2012
02/12
by
Standage, Tom
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Originally published: New York : Walker, ©2000
Topics: Adams, John Couch, 1819-1892, Planetology, Planetology, Planetology
469
469
Jun 20, 2010
06/10
by
Barath, F. T.; Newburn, R. L., Jr; Brereton, R. G.; Brown, W. E.; Davies, R. W.; Giffin, C. E.; Herriman, A. G.; Hobby, G. L.; Kaplan, L. D.; Mc Donald, W. S.
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Mission planning and experiment design for future Mariner-type Venus space probes
Topics: EXPERIMENT DESIGN, MISSION PLANNING, VENUS, MARINER SPACE PROBES, MISSION PLANNING, PLANETOLOGY,...
Determining the composition of apatites is important to understand the behavior of volatiles during planetary differentiation. Apatite is an ubiquitous magmatic mineral in the SNC meteorites. It is a significant reservoir of halogens in these meteorites and has been used to estimate the halogen budget of Mars. Apatites have been identified in sandstones and pebbles at Gale crater by ChemCam, a Laser-Induced Breakdown Spectroscometer (LIBS) instrument onboard the Curiosity rover. Their presence...
Topics: Blank, J. G., Centre National de la Recherche Scientifique, Cicutto, L., Cousin, A., Deutsches...
Highlights of Voyager 1 activity during the observatory and far-encounter phases are summarized. Daily sequence of events for the spacecraft during the period of greatest encounter activity (Feb. 26 through Mar. 7) the near-encounter phase is given. Times shown designate the time of signal reception at Deep Space Network stations. Events listed emphasize activities pertaining to the four remote sensing instruments on the scan platforms. However, the other 7 experiments will continuously collect...
Topics: NASA Technical Reports Server (NTRS), JUPITER PROBES, PLANETOLOGY, SPACE MISSIONS, SPACECRAFT...
The main purpose of the data catalog series is to provide descriptive references to data generated by space science flight missions. The data sets described include all of the actual holdings of the Space Science Data Center (NSSDC), all data sets for which direct contact information is available, and some data collections held and serviced by foreign investigators, NASA and other U.S. government agencies. This volume contains narrative descriptions of data sets of astronomy, astrophysics,...
Topics: NASA Technical Reports Server (NTRS), ASTROPHYSICS, CATALOGS (PUBLICATIONS), DATA BASES,...
This final report for the period of July 1991 to August 1994 covered a variety of topics concerning the study of Earth and Mars. The Earth studies stressed the interpretation of the MAGSAT crustal magnetic anomalies in order to determine the geological structure, mineralogical composition, magnetic nature, and the historical background of submarine features, and also featured work in the area of terrestrial remote sensing. Mars research included the early evolution of the Martian atmosphere and...
Topics: NASA Technical Reports Server (NTRS), EARTH (PLANET), MARS (PLANET), PLANETARY GEOLOGY, PLANETARY...
Over the past decade COMPLEX has published three strategy reports which, taken together, encompass the entire planetary system and recommend a coherent program of planetary exploration. The highest priority for outer planet exploration during the next decade is intensive study of Saturn (the planet, satellites, rings, and magnetosphere) as a system. The Committee additionally recommends that NASA engage in the following supporting activities: increased support of laboratory and theoretical...
Topics: NASA Technical Reports Server (NTRS), LOW THRUST PROPULSION, PLANETARY ATMOSPHERES, PLANETARY...
As the likely birthplaces of planets and an essential conduit for the buildup of stellar masses, inner disks are of fundamental interest in star and planet formation. Studies of the gaseous component of inner disks are of interest because of their ability to probe the dynamics, physical and chemical structure, and gas content of this region. We review the observational and theoretical developments in this field, highlighting the potential of such studies to, e.g., measure inner disk truncation...
Topics: DTIC Archive, Najita, Joan R, NATIONAL OPTICAL ASTRONOMY OBSERVATORIES TUCSON AZ, *SPECTRUM...
Objectives during the past year were to (1) edit a special issue of the IEEE Journal of Oceanic Engineering devoted to the MBP program, (2) adapt custom sidescan sonar software used by the Hawaii Mapping Research Group (HMRG) for use with REMUS data, (3) carry on a time series of sidescan surveys off Kakaako (Oahu) around the Kilo Nalu Cabled Reef Observatory, and (4) use our sidescan system and ROV to look for unexploded ordnance in Hawaiian coastal waters.
Topics: DTIC Archive, HAWAII UNIV HONOLULU INST OF GEOPHYSICS AND PLANETOLOGY, *UNEXPLODED AMMUNITION,...
253
253
Jul 12, 2010
07/10
by
Andrews, D. G.; Savage, R. T
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The results of systems analysis conducted on low life drag ratio (L/D) aero-assisted orbit transfer vehicle (AOTV's) are presented. The objectives for this class of vehicle and formulate technology development plans and funding levels to bring the required technologies to readiness levels, as well as develop a credible decision data base encompassing the entire range of low L/D concepts for use in future NASA Aeroassist Orbit Transfer Vehicles studies. Each candidate low L/D concept, the...
Topics: GEOPHYSICS, SCIENTISTS, PLANETOLOGY, RESEARCH, SELENOLOGY, DATA PROCESSING EQUIPMENT, HYPERVELOCITY...
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p. cm
Topics: Solar system -- Popular works, Planetology -- Popular works
The physographic curves of the moon and terrestrial planets, drawn both for the entire surface as a whole and for individual hemispheres, were compared to discover the common consistencies and individual features in the distribution of hypsometric levels. In 1983 to 1984 the automated interplanetary stations (AMS) Venera 15 and 16 made radar maps of the planet Venus. The synthesized images are the basic initial material for photogrammetric and catrographic processing to create maps of the Venus...
Topics: NASA Technical Reports Server (NTRS), HYPSOGRAPHY, IMAGING TECHNIQUES, MOON, PLANETOLOGY, RADAR...
Research at Goddard Space Flight Center during 1987 is summarized. Topics addressed include space and earth sciences, technology, flight projects and mission definition studies, and institutional technology.
Topics: NASA Technical Reports Server (NTRS), ASTROPHYSICS, CLIMATOLOGY, OCEANOGRAPHY, PLANETOLOGY,...
Since the wind tunnel proposed to be used for the Space Station Planetology Experiments are of a rather limited size, some experience and techniques used for saltation experiments in a small linear wind tunnel may be of interest. Three experiences are presented. The first concerns a length effect of saltation mass flux in which the size of the wind tunnel exaggerates the physical process taking place. A second experience concerns a non-optical technique that does not interfere with flow and by...
Topics: NASA Technical Reports Server (NTRS), MOMENTUM, PLANETOLOGY, SPACE STATION PAYLOADS, WIND TUNNELS,...
For experimentation, space offers an environment which is unobtainable on earth. One characteristic is a gravity force less than 1 g, where g is the mean earth gravity acceleration of 9.8 m/sq s. The production of uniform gravity levels above zero g in space is discussed in relationship to experimental needs. For planetology experiments, providing gravity in space will make it possible to more nearly simulate conditions on natural bodies. The g-level is but one parameter involved in the design...
Topics: NASA Technical Reports Server (NTRS), CORIOLIS EFFECT, EXPERIMENT DESIGN, GRAVITATIONAL EFFECTS,...
303
303
Jul 11, 2010
07/10
by
Zapata, R. N.; Humphris, R. R.; Henderson, K. C
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The basic research and development work towards proving the feasibility of operating an all-superconductor magnetic suspension and balance device for aerodynamic testing is presented. The feasibility of applying a quasi-six-degree-of freedom free support technique to dynamic stability research was studied along with the design concepts and parameters for applying magnetic suspension techniques to large-scale aerodynamic facilities. A prototype aerodynamic test facility was implemented. Relevant...
Topics: EDUCATION, LUNAR GEOLOGY, LUNAR SURFACE, PLANETOLOGY, INFORMATION DISSEMINATION, SCHOOLS, SCIENCE,...
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18
Mar 3, 2020
03/20
by
Xun Zhu
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The long standing problem of equatorial superrotation in a slowly rotating planetary atmosphere has been solved recently. This article presents a systematic, comprehensive, and analytical examination of the momentum budget that maintains stable superrotational winds in a given planetary atmosphere. After reviewing general approaches used in modeling comparative planetary atmospheres, I describe the major dynamical processes that maintain stable equatorial superrotation for the atmospheres of...
Topics: Comparative Planetology, Earth, Atmospheric Circulation
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32
Sep 8, 2011
09/11
by
Apfel, Necia H
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Includes bibliographical references and index
Topics: Astronomy, Astronomical instruments, Planetology, Astronomy, Astronomical instruments, Planetology,...
221
221
Jul 26, 2010
07/10
by
NON
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No Abstract Available
Topics: CATALOGS (PUBLICATIONS), MARINER SPACECRAFT, PIONEER SPACE PROBES, PIONEER VENUS SPACECRAFT, VENERA...
Our long-term goal is to improve our understanding of dynamics of marine aerosols and water vapor fields in the coastal marine boundary layer using a scanning lidar and meteorological parameters.
Topics: DTIC Archive, HAWAII UNIV HONOLULU INST OF GEOPHYSICS AND PLANETOLOGY, *BOUNDARY LAYER, *MARINE...
Eleven study tasks are described and key results are discussed for the following: advanced planning activity; cost estimation research; planetary missions performance handbooks-revisions; multiple discipline science assessment; asteroid workshop; galilean lander mission strategies; asteroid exploration study; ion drive transport capabilities; Mars strategy study; Venus surface sample return; and ion drive/solar sail assessment study.
Topics: NASA Technical Reports Server (NTRS), MISSION PLANNING, PLANETOLOGY, RESEARCH PROJECTS, SPACE...
Papers are presented dealing with interdisciplinary research in the fields of geodesy, solid earth and ocean physics. Topics discussed include: solid earth and ocean tides; the rotation of the earth and polar motion; vertical crustal motions; the geoid and ocean surface; earthquake mechanism; sea level changes; and lunar dynamics.
Topics: NASA Technical Reports Server (NTRS), CONFERENCES, EARTH PLANETARY STRUCTURE, GEODESY, OCEAN...
The types of maps available from the National Space Science Data Center/World Data Center A for Rockets and Satellites for the support of lunar and comparative planetology scientific investigations are identified and described. Information on other sources of maps useful to planetologists is included. The maps are listed according to increased map scale. Parameters given include the name, scale, date of edition, the four corner coordinates of each maps, and the NSSDC ID.
Topics: NASA Technical Reports Server (NTRS), ANIONS, LUNAR MAPS, PLANETOLOGY, SELENOLOGY, APOLLO PROJECT,...
This report presents some of the challenging research and technology accomplished at NASA Ames Research Center during FY95. The accomplishments address almost all goals of NASA's four Strategic Enterprises: Aeronautics and Space Transportation Technology, Space Sciences, Human Exploration and Development of Space, and Mission to Planet Earth. The report's primary purpose is to inform stakeholders, customers, partners, colleagues, contractors, employees, and the American people in general about...
Topics: NASA Technical Reports Server (NTRS), RESEARCH AND DEVELOPMENT, NASA SPACE PROGRAMS, TECHNOLOGY...
The crustal evolution of the terrestrial planets increase in complexity and duration with increasing size and mass of the planet. The lunar and mercurian surfaces are largely the result of intense, post-differentiation impact bombardment and subsequent volcanic filling of major impact basins. Mars, being larger, has evolved further: crustal uplifts, rifting, and shield volcanoes have begun to modify its largely Moon-like surface. The Earth is the large end-number of this sequence, where modern...
Topics: NASA Technical Reports Server (NTRS), GEOLOGY, PLANETOLOGY, COMPARISON, EARTH (PLANET), EVOLUTION...
Developments in planetology research as reported at the 1976 NASA Planetology Program Principal Investigators' meeting are summarized. Topics range from solar system evolution, comparative planetology, and geologic processes to techniques and instrument development for future exploration.
Topics: NASA Technical Reports Server (NTRS), CONFERENCES, GEOLOGY, NASA PROGRAMS, PLANETARY COMPOSITION,...
Our studies are highly interdisciplinary, but are focused on the processes and products of early planetary and asteroidal differentiation, especially the genesis of the ancient lunar crust. The compositional diversity that we explore is the residue of process diversity, which has strong relevance for comparative planetology.
Topics: NASA Technical Reports Server (NTRS), LUNAR CRUST, PLANETARY CRUSTS, PLANETOLOGY, ASTEROIDS,...
Reflectance spectroscopy is a remote sensing technique used to study the surfaces and atmospheres of solar system bodies. It provides first-order information on the presence and amounts of certain ions, molecules, and minerals on a surface or in an atmosphere. Reflectance spectroscopy has become one of the most important investigations conducted on most current and planned NASA Solar System Exploration Program space missions. This book reviews the field of reflectance spectroscopy, including...
Topics: NASA Technical Reports Server (NTRS), PLANETOLOGY, REMOTE SENSING, SPACE EXPLORATION, SPECTRAL...
Grant #NAGW-1408 was specifically awarded to obtain telescopic visible and near-IR spectral imaging of Mars during the 1988 apparition (9/28/88). The observing program was highly successful producing approximately 2 Gbytes of data, but was only funded for one year and virtually all of the funds were spent in data acquisition. The follow-up grant was funded the following year for reduction of these data into a scientifically productive form, which because of the size and nature of our...
Topics: NASA Technical Reports Server (NTRS), INFRARED ASTRONOMY, INFRARED IMAGERY, MARS (PLANET), MARS...
The in-situ exploration of the low atmosphere and surface of Venus is clearly the next step of Venus exploration. Understanding the geochemistry of the low atmosphere, interacting with rocks, and the way the integrated Venus system evolved, under the combined effects of inner planet cooling and intense atmospheric greenhouse, is a major challenge of modern planetology. Due to the dense atmosphere (95 bars at the surface), balloon platforms offer an interesting means to transport and land...
Topics: NASA Technical Reports Server (NTRS), VENUS SURFACE, VENUS PROBES, IN SITU MEASUREMENT, VENUS...
This is a compilation of brief accounts of the Laboratory's significant accomplishments during Fiscal Year 1979 that can be reported on an unclassified level. The following areas are covered: military systems technology, space science and technology, computer technology applications, energy research and development, biomedical science and engineering, ocean science and technology, fundamental research, and urban technology.
Topics: DTIC Archive, JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB, *COMPUTER ARCHITECTURE, *GUIDED...
A philosophy for planetary geoscience is presented to aid in addressing a number of major scientific questions; answers to these questions should constitute the basic geoscientific knowledge of the solar system. However, any compilation of major questions or basic knowledge in planetary geoscience involves compromises and somewhat arbitrary boundaries that reflect the prevalent level of understanding at the time.
Topics: NASA Technical Reports Server (NTRS), CELESTIAL BODIES, PHILOSOPHY, PLANETOLOGY, COSMOLOGY,...
Papers presented at the US-USSR Workshop on Planetary Sciences are compiled. The purpose of the workshop was to examine the current state of theoretical understanding of how the planets were formed and how they evolved to their present state. The workshop assessed the types of observations and experiments that are needed to advance understanding of the formation and evolution of the solar system based on the current theoretical framework.
Topics: NASA Technical Reports Server (NTRS), ASTRONOMICAL MODELS, PLANETARY EVOLUTION, PLANETARY NEBULAE,...
Abstracts of 110 papers relating to investigations of the planet Mars and intended for consideration at the colloquium are presented. Entries are arranged alphabetically according to the author's name.
Topics: NASA Technical Reports Server (NTRS), ABSTRACTS, MARS (PLANET), PLANETOLOGY, SPACE EXPLORATION,...
The goal of theory is to understand how the fundamental laws of physics laws of physics and chemistry give rise to the features of the universe. It is recommended that NASA establish independent theoretical research programs in planetary sciences and in astrophysics similar to the solar-system plasma-physics theory program, which is characterized by stable, long-term support for theorists in university departments, NASA centers, and other organizations engaged in research in topics relevant to...
Topics: NASA Technical Reports Server (NTRS), ASTROPHYSICS, NASA PROGRAMS, PLANETOLOGY, SPACE PLASMAS,...
As a result of the Apollo program and other lunar probes, questions that remained unsolved during centuries of speculation and scientific study can now be answered concerning the composition, core, surface, age, and history of the moon. Data obtained from lunar samples and instruments on the lunar surface are being used to gain insight into the history of the earth and the other planets, planetary evolution, the development of planetary magnetic fields, the nature of the solar wind, and how the...
Topics: NASA Technical Reports Server (NTRS), APOLLO PROJECT, LUNAR EXPLORATION, MOON, SELENOLOGY, EARTH...
Over the past two decades NASA spacecraft missions obtained photographs permitting accurate size measurements of the planets and moons, and their surface features. Planetary global views are displayed at the same scale, in each picture to allow visual size comparisons. Additionally, special geographical features on some of the planets are compared with selected Earth areas, again at the same scale. Artist renderings and estimated sizes are used for worlds not yet reached by spacecraft. Included...
Topics: NASA Technical Reports Server (NTRS), ASTRONOMICAL PHOTOGRAPHY, NATURAL SATELLITES, PHOTOGRAPHS,...
This publication is a compilation of reports focusing on research into the origin and evolution of the solar system with emphasis on planetary geology.
Topics: NASA Technical Reports Server (NTRS), PLANETARY EVOLUTION, PLANETARY GEOLOGY, SOLAR SYSTEM,...
During the reporting period, we carried out investigations required to enhance our design of POINTS as a tool for the search for and characterization of extra-solar planetary systems. The results of that work were included in a paper on POINTS as well as one on Newcomb, which will soon appear in the proceedings of SPIE Conference 2200. (Newcomb is a spinoff of POINTS. It is a small astrometric interferometer now being developed jointly by SAO and the U.S. Navy. It could help establish some of...
Topics: NASA Technical Reports Server (NTRS), ASTROMETRY, ASTRONOMICAL INTERFEROMETRY, INTERFEROMETERS,...
We often look "through a glass, darkly" at solar system bodies with tenuous atmospheres and direct surface exposure to the local space environment. Space weathering exposure acts via universal space-surface interaction processes to produce a thin patina of outer material covering, potentially obscuring endogenic surface materials of greatest interest for understanding origins and interior evolution. Examples of obscuring exogenic layers are radiation crusts on cometary nuclei and...
Topics: NASA Technical Reports Server (NTRS), SPACE WEATHER, SPACE WEATHERING, SURFACE REACTIONS,...
712
712
Jul 23, 2010
07/10
by
NON
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This edition of the Microgravity Science and Applications (MSA) Bibliography is a compilation of Government reports, contractor reports, conference proceedings, and journal articles dealing with flight experiments utilizing a low gravity environment to elucidate and control various processes or with ground based activities that provide supporting research. It encompasses literature published but not cited in the 1984 Revision and literature which has been published in the past year....
Topics: PLANETARY GEOLOGY, PLANETOLOGY, SPACE EXPLORATION, COMPARISON, PLANETARY SURFACES, SOLAR SYSTEM
Abstracts of papers regarding the Martian Channels, variable surface and atmospheric features on Mars, the surfaces and origins of the Martian Satellites, and the surface of Venus are presented.
Topics: NASA Technical Reports Server (NTRS), MARS (PLANET), PLANETOLOGY, VENUS (PLANET), ABSTRACTS,...
95
95
Jun 13, 2019
06/19
by
Brush, Stephen G
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v. ; 25 cm
Topics: Planetology, Earth, Solar system
Source: removedNEL
This report contains results obtained from observations using the University of Arizona 2.3 meter telescope, the Kitt Peak National Observatory 4 meter telescope and the multiple mirror telescope. Work Done included: High Resolution Imaging Potential of MMT; Earth Satellite Observations; Asteroid/Planetary Satellite Measurements; and Image Reconstruction Experiments; Scientific Accomplishments pertained to; Asteroid/Planetary Science; Red Supergiants - Limb Darkening and Extended Atmosphere;...
Topics: DTIC Archive, Strittmatter,P A, STEWARD OBSERVATORY TUCSON ARIZ, *IMAGE PROCESSING, *STARS, IMAGES,...
The ultimate long-term goal of the ONR Mine Burial Prediction (MBP) program is the development of mine burial probability models that incorporate dynamic coupled processes, seafloor material properties, and different mine types. A second major thrust is on short-term applied research that will provide Fleet Aids for the operational Navy. The short-term effort will provide the operational Navy with improved mine burial predictive capabilities by using existing models and an enhanced...
Topics: DTIC Archive, HAWAII UNIV HONOLULU INST OF GEOPHYSICS AND PLANETOLOGY, *BURIED OBJECTS,...
High resolution photographs of Phobos taken during close flybys of Viking Orbiter 1 reveal many dark patches on the floors of several craters. The apparently dark material is only prominent at large phase angles. Analysis of the photometric properties indicates that the dark patches represent areas of unusually rough textures whose reflectance near zero phase is similar to that of the mean surface (approximately 6 percent in the visible), but whose phase curve is much steeper. The contrast of...
Topics: NASA Technical Reports Server (NTRS), ASTRONOMICAL PHOTOMETRY, BRIGHTNESS, CRATERS, DARKNESS,...
Some limitations in using orbital images of planetary surfaces for comparative landform analyses are discussed. The principal orbital images used were LANDSAT MSS images of Earth and nominal Viking Orbiter images of Mars. Both are roughly comparable in having a pixel size which corresponds to about 100 m on the planetary surface. A volcanic landform on either planet must have a horizontal dimension of at least 200 m to be discernible on orbital images. A twofold bias is directly introduced into...
Topics: NASA Technical Reports Server (NTRS), CLASSIFICATIONS, GEOMORPHOLOGY, ICELAND, IMAGERY, LANDSAT...
A wide variety of experiments can be conducted on the Space Station that involve the physics of small particles of planetary significance. Processes of interest include nucleation and condensation of particles from a gas, aggregation of small particles into larger ones, and low velocity collisions of particles. All of these processes could be investigated with a general purpose facility on the Space Station. The microgravity environment would be necessary to perform many experiments, as they...
Topics: NASA Technical Reports Server (NTRS), CONDENSING, GRAVITATIONAL EFFECTS, MICROGRAVITY, NUCLEATION,...
The main purpose of the data catalog series is to provide descriptive references to data generated by space science flight missions. The data sets described include all of the actual holdings of the Space Science Data Center (NSSDC), all data sets for which direct contact information is available, and some data collections held and serviced by foreign investigators, NASA and other U.S. government agencies. This volume contains narrative descriptions of planetary and heliocentric spacecraft and...
Topics: NASA Technical Reports Server (NTRS), CATALOGS (PUBLICATIONS), DATA BASES, INFORMATION SYSTEMS,...
46
46
Oct 23, 2019
10/19
by
Hartmann, William K
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xvi, 509 pages : 24 cm
Topics: Planètes, Planetary science, Solar system, Système solaire, Planetology, Planetes, Systeme...
Source: removedNEL
