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Artemis 3 EVA Opportunities in the Vicinity of the Lunar South Pole on the Rim of Shackleton Crater
No full textEVAs in this location can begin to address science objectives 1c, 2a, 3a, 3b, 3d, 4a, 4d, 6c, and 7b, and potentially address objectives 1a, 1b, 4b, 5a-b, and 7d [9]. EVAs can also help address strategic knowledge gaps (SKGs) I-D, I-G, II-D-3, III-C-2, III-D-1, III-D-2, III-D-4, and III-J-4 of Context for Exploration of the Moon. National Academies Press, Washington D. C.David A. Kring, Natasha Barrett, Sarah J. Boazman, Aleksandra Gawronska, Cosette M. Gilmour, Samuel H. Halim, Harish, Katie McCanaan, Animireddi V. Satyakumar, and Jahnavi Sha
Impact heat driven volatile redistribution at Occator crater on Ceres as a comparative planetary process
Get PDFHere we show using Dawn high-resolution stereo imaging and topography that Ceres' unique composition has resulted in widespread mantling by solidified water- and salt-rich mud-like impact melts with scattered endogenic pits, troughs, and bright mounds indicative of outgassing of volatiles and periglacial-style activity during solidification.P. Schenk, J. Scully, D. Buczkowski, H. Sizemore, B. Schmidt, C. Pieters, A. Neesemann, D. O'Brien, S. Marchi, D. Williams, A. Nathues, M. De Sanctis, F. Tosi, C. T. Russell, J. Castillo-Rogez & C. Raymon
Global Light Plains Version 1 Shapefile
No full textThis shapefile contains the current global map of lunar light plains as published in the Meyer et al. paper entitled "The Global Distribution of Lunar Light Plains from the Lunar Reconnaissance Orbiter Camera" in JGR Planets, DOI: 10.1029/2019JE006073
Large Meteorite Impacts VI 2019 (LPI Contrib. No. 2136)
No full textIn recent years, several major international drilling and field projects on terrestrial impact structures, as well as new spacecraft missions to the Moon, neighboring planets, asteroids, and comets, have delivered important new insights into impact cratering processes within the solar system. LMI VI will provide a forum for discussion of recent results and advances, based on natural observations, spacecraft data, experimental results, and numerical simulation studies.Institutional support Barringer Crater Company, Institute of Geosciences, Brasília, IRD - Institut de Recherche pour le Développement (France), FINATEC Foundation at University of Brasília, Lunar and Planetary Institute, The Meteoritical Society, Universities Space Research Association, University of BrasíliaConference convener Wolf Uwe Reimold, University of BrasíliaPARTIAL CONTENTS: The Tin Bider Impact Structure (Saharan Platform, Algeria): New Inputs on Structural Aspects / F. Kassab and D. Belhai--Update of the Terrestrial Impact Crater Record: Crater Discovery Statistics, Size, and Age Frequency Distributions. / T. Kenkmann--Shock Deformation in the Cleanskin Impact Structure, Northern Territory, Australia / T. Kenkmann, P. W. Haines, I. Sweet, and K. Mitchell--India´s Third Impact Crater: Ramgarh, Rajasthan / T. Kenkmann, G. Wulf, and A. Agarwal--High-Precision Geochronology and Thermal Modeling of the Morokweng Impact Melt Sheet, South Africa / G. G. Kenny, J. L. Crowley, M. D. Schmitz, M. A. G. Andreoli, and R. L. Gibson--Cretaceous-Paleogene Boundary Stratigraphy of Belize / D. T. King and L. W. Petruny--What Do We Know About the Formation of Libyan Desert Glass? / C. Koeberl--Timing of Emplacement of Vredefort Granophyre Dykes / E. Kovaleva, M. S. Huber, M. Clark, and F. Fourie--Twisted Kink Bands: New Shock Deformation Microstructure in Zircon from the Vredefort Impact Structure / E. Kovaleva, D. Zamyatin, and H. Leroux--An Eroded Peak Ring Impact Recording a Tsunami on Earth: Rochechouart / P. Lambert--Current Stage of the CIRIR Research and Outreach at Rochechouart / P. Lambert--Global Impact Heritage Association: A Project Serving the Public and Impact Research / P. Lambert--The Effects of Impactor and Target Properties on the Formation of Basin Structures on the Moon / T. Lompa and K. Wünnemann--Melting Induced by Giant Collisons in the Earth-Moon System / L. Manske, N. Güldemeister, and K. Wünnemann--Orientation of Fractures in the Chicxulub Peak Ring / N. McCall, S. Gulick, A. Rae, M. Poelchau, U. Riller, J. Morgan, and J. Lofi
Topographic Slopes (5-meter) of the Moon's South Polar Ridge
No full textThis map is based on data released by the Lunar Reconnaissance Orbiter Lunar Orbiter Laser Altimeter (LOLA). The map is centered between de Gerlache and Shackleton craters and shows slopes derived from the LOLA 5-m elevation product (NASA Goddard Space Flight Center; Smith et al., 2010; Smith et al., 2017) using Horn's formula binned into seven slope ranges and assigned color values. The slope data are overlain on a derived hillshade with solar azimuth 45°W and solar elevation 45°. Polar stereographic projection is used with scale true at the pole. Feature names are included on the map
Developing a New Space Economy 2019 (LPI Contrib. No. 2152)
No full textThe overarching goal of the workshop is to identify what NASA and other U.S. and international government and space agencies can do to foster space commercialization through In Situ Resource Utilization (ISRU). As such, several objectives will be discussed: Identify Characterize, Extract, Process, and Market.Institutional Support Lunar and Planetary Institute, Universities Space Research Association, NASA Lunar Exploration Analysis GroupCo-Conveners Stephen Mackwell, American Institute of Physics, Clive Neal, University of Notre Dame, Christopher Pestak, Universities Space Research Association.PARTIAL CONTENTS: NASA Kennedy Space Center Swamp Works: Capabilities and Facilities / R. P. Mueller and J. D. Smith--Dust Tolerant Automated Umbilical (DTAU) / A. J. Nick, R. P. Mueller, I. I. Townsend, and G. J. Tamasy--Understanding Component/Materials Performance in the Lunar Environment / M. C. L. Patterson, J. Tucker, K. Carpenter, and A. Parness--Gas Storage Systems for In Situ Resource Utilization / M. J. Poston, M. A. Miller, S. T. Green, A. B. McCleney, K. D. Retherford, and U. Raut--Electrostatic Beneficiation of Lunar Regolith; a Review of Previous Testing as a Starting Point for Future Work / J. W. Quinn--IS5 – In-Situ Resource Utilization: Scouting?Sampling?Separation?Synthesis?Storage – A Concept Study / U. Raut, K. D. Retherford, V. Poenitzsch, D. M. Hurley, M. A. Miller, P. Metzger, A. D. Whizin, and M. Poston--Thermogravimetric Analysis of the Reduction of Ilmenite and NU-LHT-2M with Hydrogen and Methane / P. Reiss, F. Kerscher, and L. Grill--Drilling in a Lunar Polar Crater: Triboelectric Charge Regulation / D. J. Rhodes and W. M. Farrell--Beyond Rovers: Mobility for Lunar ISRU / G. Roesler--Modelling Prospectivity of Under Explored Regions: Deploying Ore System Based Predictions in a Lunar Environment / N. Rogers and M. Villeneuve--Regolith Extraction Through Molten Regolith Electrolysis / D. Sadoway, A. Ignatiev, P. Curreri, and E. Carol
A unified model for hydrogen in the Earth and Moon: No one expects the Theia contribution
Get PDFThe Moon is thought to have formed after a planetary embryo, known as Theia, collided with the proto-Earth 4.5 billion years ago. This so-called Giant Impact was the last major event during Earth's accretion, and its effects on the composition of the Earth and the newly forming Moon would be measureable today. Recent work on lunar samples has revealed that the Moon's water was not lost as a result of this giant impact. Instead, the Moon appears to contain multiple hydrogen reservoirs with diverse deuterium-to-hydrogen (D/H) ratios. For the first time, we incorporate hydrogen isotopic measurements of lunar samples to help constrain the composition of Theia.Steven J. Desch, Katharine L. Robinso
Topography and Permanently Shaded Regions (PSRs) of the Moon's South Polar Ridge
No full textThis map is based on data released by the Lunar Reconnaissance Orbiter Lunar Orbiter Laser Altimeter (LOLA). The map is centered between de Gerlache and Shackleton craters and shows the LOLA 5-m elevation product (NASA Goddard Space Flight Center; Smith et al., 2010; Smith et al., 2017). The elevation data are overlain on a derived hillshade with solar azimuth 45°W and solar elevation 45°. Polar stereographic projection is used with scale true at the pole. Feature names are included on the map. [Note: This map was not controlled using the techniques of Glaser et al. (2014, 2018), thus there are artifacts in LOLA track offsets.
35th Annual Summer Intern Conference (2019)
No full text2019 Summer Intern Program for Undergraduates Lunar and Planetary InstituteSponsored by Lunar and Planetary Institute, NASA Johnson Space CenterCompiled in 2019 by Meeting and Publication Services, Lunar and Planetary InstituteGeology of the Lunar Smythii Basin / R. A. Albach and H. M. Meyer -- Mineralogy and Petrology of Fine-Grained Calcium-Aluminum-Rich Inclusions from the / Reduced CV3 Chondrite Thiel Mountains 07007 / C. J. Anderkin, J. Han, and L. P. Keller / Experimentally Testing Model-Predicted Crystallization Trends of the Lunar Highlands Mg-Suite / M. F. Balemian-Spencer and T. C. Prissel -- Reactions of Fungal Isolates with H5 Meteoritic Matrices / K. S. R. Barbre, R. Davis, and A. Regberg -- Modeling Low-Grade Metamorphic Phases of Sedimentary Rocks at Gale Crater, Mars / S. Benaroya and J. Semprich -- Searching for Impact Melt in the Ejecta of Occator Crater, Ceres / A. J. Blance, H. M. Meyer, P. M. Schenk, and J. D. Stopar -- Scattering Mechanisms Associated with Unusual Radar Properties of Terrestrial and Lunar Geologic Settings / M. M. Coholich, S. Bhiravarasu, E. G. Rivera-Valentín, and H. Meyer -- Petrographic and Geochemical Analyses of One Leoville and Two Allende CAIs / M. B. Comins, P. Mane, J. I. Simon, and R. M. G. Armytage -- The Post Bombardment Signature of a Spike in Impact Velocity / C. B. Cooper and E. G. Rivera-Valentín -- High Resolution Microstructural Analysis of Shock-Deformation in Apatite from the Chicxulub Impact Structure / M. A. Cox, T. M. Erickson, R. Christoffersen, D. K. Ross, M. Schmieder, and D. A. Kring -- Experimental Investigation of Venus Oxidation: Implications for Surface Mineralogy and Pyroxene and Basalt Spectra / K. S. Cutler, J. Filiberto, and A. H. Treiman -- Protocol Development for Organic and Inorganic Surface Molecular Contamination Monitoring in NASA's Curation Cleanrooms / L. J. C. Dorlas, A. Hutzler, and J. A. Lewis -- Dating Young Mare Flows: Lichtenberg and Flamsteed Regions / E. Hon and J. Stopar -- Thrust Faulting on Venus: Tectonic Modeling of the Vedma Dorsa Ridge Belt / S. A. Moruzzi and W. S. Kiefer -- Development of Small Profile Doppler Radar for Planetary Radar Analog Studies / G. A. Muñiz-Negrón and E. G. Rivera-Valentín -- Confidently Measuring Near-Earth Asteroid Radii from Delay-Doppler Radar Images / E. A. Whittaker, P. A. Taylor, and E. G. Rivera-Valentín
Relative Humidity on Mars: New Results From the Phoenix thermal and electrical conductivity probe sensor
No full textWe present our recalibration of Phoenix's humidity sensor. This recalibration was conducted with a copy of the sensor subjected to the environmental conditions at the Phoenix landing site. Our experiments focus on the warmest and driest conditions because they were not covered in previous calibrations. Our recalibration shows daytime water content values one order of magnitude larger than those in the previous calibration. At nighttime conditions, our results are in excellent agreement with the previous calibration. Our higher daytime values are in better agreement with independent estimates from the ground, and from orbit. Our results imply larger diurnal variations of water content at Phoenix compared to Curiosity, suggesting a stronger atmosphere‐soil interchange in the Martian arctic than at lower latitudes. Further, they indicate that environmental conditions favorable for the formation of saline solutions (brine) are only achieved temporarily between midnight and 6 a.m. on a few Martian days.E. Fischer, G. M. Martínez, N. O. Rennó, L. K. Tamppari, A. P. Zen