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Book Review: Shoot The Moon: A Complete Guide To Lunar Imaging, T. D. Oswalt 2017 Embry-Riddle Aeronautical University - Daytona Beach

Book Review: Shoot The Moon: A Complete Guide To Lunar Imaging, T. D. Oswalt

Publications

This document is Dr. Oswalt’s review of Shoot the Moon: a Complete Guide to Lunar Imaging by Dupont-Bloch, Nicolas. Cambridge, 2016, 323 p index, 9781107548442 $39.95, 9781316657867 $32.00.


Shape Modeling And Boulder Napping Of Asteroid 1992 Uy4., Nicholas D Duong 2017 University of Louisville

Shape Modeling And Boulder Napping Of Asteroid 1992 Uy4., Nicholas D Duong

College of Arts & Sciences Senior Honors Theses

In August 2005, the near-Earth Asteroid 1992 UY4 made a close flyby, coming within 0.04 au of our planet. Between the dates of 1-10 August 2005, it was observed via delay-Doppler radar imaging by the Arecibo Observatory (2380 MHz, 13 cm) and the DSS-14 antenna at the Goldstone Deep Space Communications Complex (8560 MHz, 3.5 cm). The images achieve a resolution as fine as 7.5 m/pixel and reveal a lumpy and modestly asymmetric object. The images also revealed the presence of numerous large boulders/blocks on the surface of 1992 UY4. By using the modeling software ...


Characterization Of Venusian Atmospheric Dynamics Using Venus Express Images And Ground-Based Observations, Jacob L. Gunnarson 2017 College of William and Mary

Characterization Of Venusian Atmospheric Dynamics Using Venus Express Images And Ground-Based Observations, Jacob L. Gunnarson

Undergraduate Honors Theses

The equatorial atmosphere of Venus rotates 60 times faster than the solid planet, a poorly understood phenomenon known as superrotation. Kelvin-like waves have been hypothesized to maintain the superrotation against dissipation, and the planet- scale “Y-feature”, a transient cloud feature, is likely their visible manifestation. In order to detect these waves, the spatial and temporal evolution of Venus’ atmosphere as a whole must be better characterized on long time scales. Using data from the Venus Monitoring Camera on board Venus Express, we have found yearly average zonal wind profiles by using Correlation Image Velocimetry. In order to better char- acterize ...


Book Review: From The Realm Of The Nebulae To Populations Of Galaxies: Dialogues On A Century Of Research, Astrophysics And Space Science Library, 435, T. D. Oswalt 2017 Embry-Riddle Aeronautical University - Daytona Beach

Book Review: From The Realm Of The Nebulae To Populations Of Galaxies: Dialogues On A Century Of Research, Astrophysics And Space Science Library, 435, T. D. Oswalt

Publications

This document is Dr. Oswalt’s review of From the Realm of the Nebulae to Populations of Galaxies : Dialogues on a Century of Research, Astrophysics and Space Science Library, 435. by Mauro D'Onofrio, Roberto Rampazzo, and Simone Zaggia Springer, 2016 785p bibl index afp, 9783319310046 $279.00, 9783319310060 $219.00


Inferring Telescope Polarization Properties Through Spectral Lines Without Linear Polarization, Alysa Derks 2017 University of Colorado, Boulder

Inferring Telescope Polarization Properties Through Spectral Lines Without Linear Polarization, Alysa Derks

Undergraduate Honors Theses

Polarimetric observations taken with ground- or space-based telescopes usually need to be corrected for changes of the polarization state induced in the optical path. In this paper, I present a new technique to determine the polarization properties of a telescope through observations of spectral lines that have no or negligible intrinsic linear polarization signals. For such spectral lines, any observed linear polarization must be induced by the telescope optics. I apply the technique to observations taken with the Spectropolarimeter for Infrared and Optical Regions (SPINOR) at the Dunn Solar Telescope (DST) and demonstrate that I can retrieve the characteristic polarization ...


Development Of A Pluto Chamber For Surface Simulations, Zachary Michael McMahon 2016 University of Arkansas, Fayetteville

Development Of A Pluto Chamber For Surface Simulations, Zachary Michael Mcmahon

Theses and Dissertations

In light of the exciting new discoveries being made by the New Horizons team, more data on Pluto is available than ever before. However, with the increase in recovered data, there is now a need for laboratory data to interpret it. Laboratory simulation of these conditions and subsequent testing of materials and samples therein is now possible and necessary to understand what has been observed. To do these simulations, a vessel that can achieve low temperatures and high vacuum is required. The scope of this work presented here was to design, build, and test a chamber that could perform these ...


Effects Of Mars Regolith Analogs, Uvc Radiation, Temperature, Pressure, And Ph On The Growth And Survivability Of Methanogenic Archaea And Stable Carbon Isotope Fractionation: Implications For Surface And Subsurface Life On Mars, Navita Sinha 2016 University of Arkansas, Fayetteville

Effects Of Mars Regolith Analogs, Uvc Radiation, Temperature, Pressure, And Ph On The Growth And Survivability Of Methanogenic Archaea And Stable Carbon Isotope Fractionation: Implications For Surface And Subsurface Life On Mars, Navita Sinha

Theses and Dissertations

Mars is one of the suitable bodies in our solar system that can accommodate extraterrestrial life. The detection of plumes of methane in the Martian atmosphere, geochemical evidence, indication of flow of intermittent liquid water on the Martian surface, and geomorphologies of Mars have bolstered the plausibility of finding extant or evidence of extinct life on its surface and/or subsurface. However, contemporary Mars has been considered as an inhospitable planet for several reasons, such as low atmospheric surface pressure, low surface temperature, and intense DNA damaging radiation. Despite the hostile conditions of Mars, a few strains of methanogenic archaea ...


Book Review: The International Atlas Of Mars Exploration: From Spirit To Curiosity: V.2: 2004 To 2014, T. D. Oswalt 2016 Embry-Riddle Aeronautical University - Daytona Beach

Book Review: The International Atlas Of Mars Exploration: From Spirit To Curiosity: V.2: 2004 To 2014, T. D. Oswalt

Publications

This document is Dr. Oswalt’s review of The International Atlas of Mars Exploration: from Spirit to Curiosity : V.2: 2004 to 2014 by Philip J. Stooke. 444p bibl index, 9781107030930 $145.00, 9781139344470 LC Call Number: 1000


Formation And Past Evolution Of The Meteoroid Complex Of Comet 96p/Machholz, Abedin Yusein Abedin 2016 The Univerisity of Western Ontario

Formation And Past Evolution Of The Meteoroid Complex Of Comet 96p/Machholz, Abedin Yusein Abedin

Electronic Thesis and Dissertation Repository

The past dynamical evolution of the meteoroid streams associated with comet 96P/Machholz is investigated. The goal is to obtain a coherent picture of the past capture of this large comet into a short period orbit, and its subsequent breakup hierarchy. In particular, the aim is to constrain the earliest epoch that this large first precursor started to supply meteoroids into the interplanetary space. The fragments and meteoroid streams of that past cometary decay constitute a wide multiplex of interplanetary bodies, knows as the 96P/Machholz complex. The largest presently surviving fragment is comet 96P/Machholz, followed by a large ...


Experimental Simulations Of Recurring Slope Lineae And Other Flow Formation Features On Mars, Julia Ann Heydenreich 2016 University of Arkansas, Fayetteville

Experimental Simulations Of Recurring Slope Lineae And Other Flow Formation Features On Mars, Julia Ann Heydenreich

Theses and Dissertations

Various flow formation features from gullies to recurring slope lineae (RSL) have been identified across the martian surface. The formation of these geologic features are still being determined. Recently, several aspects of these flow features indicate that salt water flows in the subsurface during the warmer months when the ice melts. This paper explores the formation of these processes using laboratory experimental simulations. Experiments were conducted in a wooden flume under varying martian conditions of temperature, slope angle, regolith simulant and a liquid subsurface flow. By adjusting the flume at specific heights, several slopes were obtained to mimic the slopes ...


Variability Of Mars' Seasonal North Polar Cap, Richard W. Schmude Jr. 2016 Gordon State College

Variability Of Mars' Seasonal North Polar Cap, Richard W. Schmude Jr.

Georgia Journal of Science

Mars’ seasonal north polar cap (hereafter sNPC) underwent year-to-year changes between 2008 and 2015 or Mars years 29–33. The writer monitored changes in the sNPC using images made with the MARCI camera onboard the Mars Reconnaissance Orbiter (MRO). Nine isolated bright spots corresponding to Korolev, Lomonosov, and Louth Craters, the albedo features Ierne, Olympia (or Lemuria), and Cecropia, and three unnamed features were examined. The following was concluded: 1) the sNPC underwent small year-to-year changes between 2008 and 2015 [MY = 29–33], 2) there are no years where all temporary frost features lasted longer than their mean lifespan, and ...


Aging Comets And Their Meteor Showers, Quanzhi Ye 2016 The University of Western Ontario

Aging Comets And Their Meteor Showers, Quanzhi Ye

Electronic Thesis and Dissertation Repository

Comets are thought to be responsible for the terrestrial accretion of water and organic materials. Comets evolve very quickly, and will generally deplete their volatiles in a few hundred revolutions. This process, or the aging of comets, is one of the most critical yet poorly understood problems in planetary astronomy. The goal of this thesis is to better understand this problem by examining different parts of the cometary aging spectrum of Jupiter-family comets (JFCs), a group of comets that dominates the cometary influx in the near-Earth space, using both telescopic and meteor observations. We examine two representative JFCs and the ...


Back Half Of The Year, Ian R. Clarke 2016 Gettysburg College

Back Half Of The Year, Ian R. Clarke

Physics and Astronomy Faculty Publications

Here we are in the back half of 2016, and the days are getting shorter. We have, as of today, lost 18 minutes since the solstice on June 20, and the speed of that change is quickening. You may wonder why it is that we have our hottest weather after our longest day is behind us. The simple answer is that it takes time for land and water masses to warm up. That’s the reason that Sept. 21 is likely to be a lot warmer than March 21, even though they have the same amount of daylight. [excerpt]


Living In The Milky Way, Ian R. Clarke 2016 Gettysburg College

Living In The Milky Way, Ian R. Clarke

Physics and Astronomy Faculty Publications

It’s finally here. Today, June 20 at 6:34 p.m., is the the summer solstice, also known as the first day of summer and, confusingly enough, midsummer’s eve. From a scientific perspective, it marks the moment the sun reaches its northernmost point in our sky. As a result of that position, it’s the shortest night and longest day if you live north of the equator. [excerpt]


Space Traffic Safety: Is Global Space Traffic Control The Answer?, Leslie Harris Jr. 2016 American Public University System

Space Traffic Safety: Is Global Space Traffic Control The Answer?, Leslie Harris Jr.

Master's Capstone Theses

This study explores the concept of a Global Space Traffic Control as a possible means to enhance the safety of outer space traffic. Space debris, the addition of new spacefaring entities and the ad hoc nature of current space traffic control measures are all factors contributing to the hazardous conditions for space travel today. The space community, writ large, has made strides in improving the safety of space operations by instituting debris mitigation measures. However, these efforts may be too-little-too-late as the debris problem continues to worsen to the point where certain prime orbits may be unusable in the near ...


Investigating Mineral Stability Under Venus Conditions: A Focus On The Venus Radar Anomalies, Erika Kohler 2016 University of Arkansas, Fayetteville

Investigating Mineral Stability Under Venus Conditions: A Focus On The Venus Radar Anomalies, Erika Kohler

Theses and Dissertations

Radar studies of the surface of Venus have identified regions with high radar reflectivity concentrated in the Venusian highlands: between 2.5 and 4.75 km above a planetary radius of 6051 km, though it varies with latitude. Previous research has proposed several theories on the source of these anomalies, including increased surface roughness, metallic materials with higher dielectric constants, or ferroelectric materials. Prior work suggests several processes that could be the origin of these anomalies, such as surface-atmospheric interactions or low lying clouds or fog. Alternatively, these anomalies could result from a semi-metallic compound trapped at the cooler conditions ...


A Constitutional Political Economy Perspective On The Colonization Of Mars, Shashank Sirivolu 2016 University of Pennsylvania

A Constitutional Political Economy Perspective On The Colonization Of Mars, Shashank Sirivolu

Honors Theses (PPE)

NASA has released an account of the agency's plans for a mission to Mars. Private organizations, like SpaceX, too have expressed a goal to visit or, in some cases, even establish settlements on Mars. Yet the prospect of establishing settlements, that is, colonizing - as opposed to simply exploring - raises a number of issues. The focus of this study is on the emergence of institutions and organizations on an extraterrestrial planet like Mars. Specifically, the thesis will explore the conscious design of organizations and institutions of collective action, from the Constitutional Political Economy perspective.


Book Review: Moons Of The Solar System: From Giant Ganymede To Dainty Dactyl, T. D. Oswalt 2016 Embry-Riddle Aeronautical University - Daytona Beach

Book Review: Moons Of The Solar System: From Giant Ganymede To Dainty Dactyl, T. D. Oswalt

Publications

This document is Dr. Oswalt’s review of Moons of the Solar System : from Giant Ganymede to Dainty Dactyl by James A. Hall, III. Springer 2015. 297p index afp, 9783319206356 $34.99, 9783319206363 $19.99


Exploring The Early Solar System With Cometary Gases: Observations Of Spontaneous Activity Around Comet 67p/Churyumov-Gerasimenko Post-Perihelion With The R-Alice Ultraviolet Spectrograph, John W. Noonan 2016 University of Colorado, Boulder

Exploring The Early Solar System With Cometary Gases: Observations Of Spontaneous Activity Around Comet 67p/Churyumov-Gerasimenko Post-Perihelion With The R-Alice Ultraviolet Spectrograph, John W. Noonan

Undergraduate Honors Theses

The Rosetta Alice (R-Alice) ultraviolet spectrograph on the European Space Agency Rosetta spacecraft, currently escorting the comet 67P/Churyumov-Gerasimenko in its orbit around the Sun, has observed the activity of the comet since encounter in August 2014. Fortuitous observations taken in October and November 2015, two and three months after perihelion respectively, show large increases in the Lyman-Beta, OI 1304, CII 1335, OI] 1356, and CI 1657 atomic emission lines that indicate gas outbursts. Due to the electron impact on gases in the cometary coma the data is compared to measured cross sections and line ratios to put constraints on ...


Multi-Spectral Sensor Driven Solar Euv Irradiance Models With Improved Spectro-Temporal Resolution For Space Weather Applications At Earth And Mars, Edward M.B. Thiemann 2016 University of Colorado at Boulder

Multi-Spectral Sensor Driven Solar Euv Irradiance Models With Improved Spectro-Temporal Resolution For Space Weather Applications At Earth And Mars, Edward M.B. Thiemann

Electrical, Computer & Energy Engineering Graduate Theses & Dissertations

Solar extreme ultraviolet (EUV) radiation is a primary driver of space weather at Earth and Mars. At Earth, this radiation can affect satellite drag and disrupt communication and navigation signals. At Mars, it contributes to the loss of a once dense atmosphere to space. Recent EUV irradiance instruments, such as the EUV Monitor (EUVM) on the Mars Atmosphere and Volatile EvolutioN (MAVEN) orbiter and the EUV and X-ray Irradiance Sensors (EXIS) on the next generation Geostationary Operational Environmental Satellites (GOES) use multi-spectral sensors to measure key portions of the EUV spectrum which drive models to estimate the complete EUV spectral ...


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