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Planetary Sciences Community Meetings Calendar

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Organized by LPI/USRA *

February 2014

3-4	Vesta in the Light of Dawn: First Exploration of a Protoplanet in the Asteroid Belt *, Houston, Texas
3-6	Exoplanet Observations with the E-ELT, Garching, Germany
5-7	Workshop on the Habitability of Icy Worlds *, Pasadena, California  The primary objective of this workshop will be to focus on the astrobiological potential of icy worlds in the outer solar system — including Europa, Ganymede, Enceladus, Titan, and beyond — with discussion on future research directions and spacecraft missions that can best assess that potential. The agenda for the workshop will be organized around the unique planetary environments of the outer solar system. Presentations on research involving terrestrial analogs are also encouraged. The format of the workshop will be 2.5 to 3 days of presentations and discussion divided into thematic sessions that cover topics including (but not necessarily limited to) habitability in extreme environments; the Galilean satellites; the saturnian satellites; the icy worlds of Uranus and Neptune; the Kuiper belt and beyond; the Cassini solstice mission; the Europa Clipper study; the ESA JUpiter ICy moons Explorer (JUICE); and the future of outer solar system exploration.
9-14	AGU Chapman Conference on Magnetosphere-Ionosphere Coupling in the Solar System, Yosemite National Park, California  This cross-discipline AGU Chapman conference, will examine the details of the ionosphere-magnetosphere coupling processes using results from both measurements and modeling. Topics that will be discussed include the ionosphere as a source of magnetospheric plasma, the effects of the low energy ionospheric plasma on the stability of the more energetic plasmas in the magnetosphere, the role of currents and electric/magnetic fields in coupling the two regions, the unified global modeling of the ionosphere and magnetosphere, and the coupling of the ionosphere and magnetosphere at other planets and moons throughout the solar system.
9-14	Exoclimes III: The Diversity of Planetary Atmospheres, Davos, Switzerland  Planetary atmospheres are complex and evolving entities, as mankind is rapidly coming to realize while attempting to understand, forecast, and mitigate human-induced climate change. In the solar system, our neighbors Venus and Mars provide striking examples of two endpoints of planetary evolution: runaway greenhouse and loss of atmosphere to space. The variety of extrasolar planets brings a wider angle to the issue: from scorching “hot Jupiters” to ocean worlds, exo-atmospheres explore many configurations unknown in the solar system, such as iron clouds, silicate rains, extreme plate tectonics, and steam volcanos. Exoplanetary atmospheres have recently become accessible to observations, starting with hot gas giants, and gradually moving toward more Earth-like planets. This meeting will bring together Earth, solar system, and exoplanet specialists to discuss recent results and the way ahead.
17-18	First FISICA Workshop: Science Goals of a Sub-Arcsecond Far-Infrared Space Observatory, Rome, Italy
18-19	Science and Challenges of Lunar Sample Return Workshop, Noordwijk, The Netherlands  The Moon is an important exploration destination for ESA and is considered to be the next destination for humans beyond Low Earth Orbit. European access to the lunar surface is most likely to be made through cooperation with international partners and opportunities for international cooperation in the broad area of lunar exploration are being investigated. Sample return missions are an important element in the future cooperative exploration scenarios under discussion, as a next step after surface missions. They are a means of building international partnerships, developing and demonstrating technologies and capabilities, and performing detailed analyses to answer fundamental scientific questions and address exploration enabling knowledge gaps through analyses which cannot be performed in situ. Such missions may be required to access extreme environments, perform complex surface operations, and handle uniquely demanding sample requirements. Such activities can result in major advances in planetary sciences, astrobiology and the future of exploration. A Lunar Polar Sample Return mission, envisaged in the early 2020s by Roscosmos, has been identified by ESA as an important cooperative mission opportunity, and as a logical follow-on from a possible European participation to the Luna-Resurs Lander mission planned by Roscosmos before the end of this decade. In addition a human tended deep space capability, as initiated with the Orion vehicle currently developed by NASA in cooperation with ESA, can be of benefit to a sample return mission and may lead to a future integration of robotic and human exploration. In preparation for these missions it is important to review our current knowledge and understanding of the Moon, establish the scientific and technical goals that should be targeted and the associated challenges that lie ahead. This workshop will explore the possible benefits and scientific return from Lunar Sample Return missions and investigate the implications for future mission systems.
28	The Early Magmatic and Tectonic History of the Moon as Revealed by GRAIL (Jeff Andrews-Hanna, Colorado School of Mines), Lecture Hall  The geological record of the earliest history of the Moon is poorly preserved as a result of the heavy impact bombardment of the surface prior to 3.7 Ga. However, the signatures of early lunar evolution are preserved in the subsurface. Recent data from NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission is providing a view of the lunar subsurface at unprecedented resolution. Linear gravity anomalies reveal a population of ancient igneous intrusions that likely formed during an early period of thermal expansion of the Moon, providing an important constraint on lunar formation. Later intrusive activity was dominated by the formation of circular or arcuate dikes within the ring structures surrounding the major impact basins. In the absence of ring dikes, the gravitational signatures of tectonic offsets across the rings reveal the nature of the basin ring tectonics. The largest magmatic-tectonic structure revealed by GRAIL is a quasi-rectangular set of linear density anomalies ~2500 km in diameter, encompassing the Procellarum region on the lunar nearside. The gravitational signatures of the Procellarum border structures are consistent with volcanically flooded rift valleys, formed by extension driven by the gradual cooling and contraction of the Procellarum KREEP terrain. These and other observations from GRAIL are shedding new light on the early history of Earth's nearest neighbor.

 

March 2014

1-8	IEEE Aerospace Conference, Big Sky, Montana  The international IEEE Aerospace Conference, with AIAA and PHM Society as technical cosponsors, is organized to promote interdisciplinary understanding of aerospace systems, their underlying science and technology, and their applications to government and commercial endeavors.
4-5	SELENE Symposium 2014: International Symposium of Lunar Science and Exploration Using Data from Multi-Instruments, Tokyo, Japan  Significant progress in lunar science and technology has been made in the last decade by orbiter missions including our SELENE (Kaguya). It is time to start new analyses, for instance using data from multi-instruments and/or lunar samples. For this purpose, we held an international symposium of lunar science, the SELENE SYMPOSIUM 2013, at the Institute of Space and Astronautical Science (ISAS), Sagamihara, Japan, last January. The symposium was very fruitful with more than 90 participants from 7 countries. Here, we are pleased to announce the 2nd symposium, the SELENE SYMPOSIUM 2014, in Japan again. The meeting will be held at the National Astronomical Observatory of Japan (NAOJ), Mitaka City, Tokyo. All scientists and engineers around the world who are interested in lunar science are invited to come together for beneficial discussions on the new views of the origin and evolution of the Moon. Presentation topics will be widely opened.
7	A New Volatility Scale for the Earth-Moon System and the Status of Water in the Moon (Francis Albarède, Ecole Nationale Supérieure, France), Lecture Hall  The notion of a dry Moon has recently been challenged by the discovery of high water contents in lunar apatites and in melt inclusions within olivine crystals from two pyroclastic glasses. However, these water contents were determined on lithologies that are rare on the lunar surface. We measured the Zn content, a highly volatile element, of mineral and rock fragments in lunar soils collected during Apollo missions, which average over the surface of the Moon. We show here that the Moon is significantly more depleted in Zn than the Earth. Combining Zn with existing K and Rb data on similar rocks allows us to anchor a new volatility scale based on the bond energy of non-siderophile elements in their condensed phases. Extrapolating the volatility curve to H shows that the bulk of the lunar interior must be dry (≤1 ppm). This contrasts with the water content of the mantle sources of pyroclastic glasses, inferred to contain up to ~40 ppm water based on H2O/Ce ratios. These observations are best reconciled if pyroclastic glasses derive from localized water-rich heterogeneities in a dominantly dry lunar interior.
16	International Workshop on Scientific Opportunities in Cislunar Space (SOCS), Houston, Texas  Cislunar space, from low Earth orbit to the Lunar far side halo orbit (LL2), is a uniquely accessible environment for planetary scientists and explorers providing physical analogs for many extreme conditions from Mercury to Pluto. Cislunar space provides two primary environments for in situ and prepared experimentation: Long duration cryogenic environments down to 25 Kelvin with natural or manmade volatile ices and hard vacuum deep space partials, and plasma and radiation environments. The SOCS workshops and challenges will focus on developing the technologies and techniques to illuminate the chemistry and physics of deep space targets such as the ice giants, icy moons, or the partials and plasmas around near Earth objects (NEOs).
16	SHARAD/MARSIS Data Users' Workshop, The Woodlands, Texas
17-20	Science with the Hubble Space Telescope IV: Looking to the Future, Rome, Italy
17-21	45th Lunar and Planetary Science Conference (#LPSC2014) *, The Woodlands, Texas
17-21	Search for Life Beyond the Solar System — Exoplanets, Biomarkers and Instruments, Tucson, Arizona  The goal of the conference is to bring together the interdisciplinary community required to address this multi-faceted challenge: experts on exoplanet observations, early and extreme life on earth, atmospheric biomarkers, and planet-finding telescopes.
18-21	International Workshop on Scientific Use, Digitization and Preserving Astronomical Photographic Records, Prague, Czech Republic
20-22	Meeting of the Astronomical Society of India 2014, Mohali, India
26-28	First ExoMars 2018 Landing Site Selection Workshop, Madrid, Spain

 

April 2014

1-3	International Cometary Workshop, Toulouse, France  The workshop will cover topics ranging from the dynamical and chemical evolution of the solar nebula during formation, to the techniques for measuring the composition of comets. Invited speakers include some of the community leaders in cometary science, measurements and technology development. We will discuss the role that Rosetta measurements will play in understanding the origin of Solar System bodies, and what future missions to comets are being planned.
4	Properties of the Lunar Regolith Revealed by the Diviner Lunar Radiometer (Benjamin Greenhagen, Jet Propulsion Laboratory), Hess Room  The Diviner Lunar Radiometer, onboard the Lunar Reconnaissance Orbiter, is the first multispectral thermal instrument to globally map the surface of the Moon. Diviner’s unprecedented and growing dataset is revealing the extreme nature of the lunar thermal environment, thermophysical properties, and surface composition. In this talk I will address each of these three topics, with emphasis on my contributions to the surface compositional and thermophysical investigations. Additionally, I will describe the legacy of Diviner for future opportunities to explore other airless solar system bodies using thermal emission techniques.
8-10	Titan Through Time Workshop 3, Laurel, Maryland  We are pleased to announce a third workshop on "Titan Through Time" in 2014 at the Applied Physics Laboratory in Laurel, MD, following the success of the previous workshops in 2010 and 2012 at nearby Goddard Space Flight Center. The third meeting will have a similar format, with a 2 1/2 day science program comprised of themed sessions, and featuring a mixture of invited reviews, and contributed talks and posters. As in previous years, we welcome scientific reports and attendance from the widest possible cross-section of the scientific community, including both those studying Titan directly, but also those whose research interests have intersections with Titan science in areas such as laboratory chemistry and spectroscopy; modeling of planetary atmospheres, surfaces and interiors; terrestrial analogs and comparative planetology; and the formation and evolution of the solar system.
8-11	4th International Workshop on on Lunar and Planetary Compact and Cryogenic Science and Technology Applications (LSA 4), Cocoa Beach, Florida  LSA 4 will be a crossroads for scientist, engineers, and entrepreneurs who are building and flying lunar missions now. After 30 years of neglect, the Moon is becoming a very active and crowded place. Russia, China, and the U.S. all plan to have active lander/rover missions on the lunar surface in 2017-2018. In addition, there will be many secondary payloads and LunarCube missions to the surface of the Moon and throughout Cislunar space with rides provided by smaller national and private programs such as the Google Lunar X Prize teams. In response, LSA 4 will bring together the best, the brightest and the most passionate to deliver progress updates, the latest discoveries and newest opportunities, technical presentations and discussions on lander rover technologies; ISRU, especially cryogenic volatiles deposits; and cryogenic planetary science and processes. The latest results from LRO, LCROSS, and LADEE will be presented, and Astrobotic, MoonExpress, Luna, and Resource Prospector will provide updates on the progress of their missions. LSA 4 is the anchor event for a week of activities in and around the Kennedy Space Center including the 43rd Space Congress sponsored by Canaveral Council of Technical Societies (CCTS), Yuri's Night and a banquet co-sponsored by the Missile, Space and Range Pioneers, a member of CCTS.
11	Planetary Volcanism: Environmental Effects on Eruption Style (Karl Mitchell, Jet Propulsion Laboratory), Lecture Hall  Volcanism is a common occurrence on planetary bodies, including asteroids as well as rocky and icy planets and moons, and on some worlds is both the dominant mode of heat transport to planetary surfaces and the main resurfacing mechanism. Dr Mitchell will discuss the dynamics of volcanic eruptions, how planetary environments modulate the expression of volcanism, and how volcanic features can be used to give insights into the planetary interior.
22-24	Humans to Mars Summit, Washington, DC
25	Constraints on the Formation Age and Evolution of the Moon from 142Nd-143Nd Systematics of Apollo 12 Basalts (Claire McLeod, University of Houston), Lecture Hall  The Moon likely formed as a result of a giant impact between proto-Earth and another large body. The timing of this event and the subsequent lunar differentiation timescales are actively debated. New high-precision Nd isotope data for Apollo mare basalts are used to evaluate the Low-Ti, High-Ti and KREEP mantle source reservoirs within the context of lunar formation and evolution. The resulting models are assessed using both reported 146Sm half-lives (68 and 103 Myr). The linear relationship defined by 142Nd-143Nd systematics does not represent multi-component mixing and is interpreted as an isochron recording a mantle closure age for the Sm-Nd system in the Moon. Using a chondritic source model with present day μ142Nd of -7.3, the mare basalt mantle source reservoirs closed at 4.45+10-09 Ga (t½ 146Sm = 68 Myr) or 4.39+16-14 Ga (t½ 146Sm = 103 Myr). In a superchondritic, 2-stage evolution model with present day μ142Nd of 0, mantle source closure ages are constrained to 4.41+10-08 (t½ 146Sm = 68 Myr) or 4.34+15-14 Ga (t½ 146Sm = 103 Myr). The lunar mantle source reservoir closure ages <4.5 Ga may be reconciled in 3 potential scenarios. First, the Moon formed ca. 4.55 to 4.47 Ga and small amounts of residual melts were sustained within a crystallizing lunar magma ocean (LMO) for up to c. 200 Myr from tidal heating or asymmetric LMO evolution. Second, the LMO crystallized rapidly after early Moon formation. The later Sm-Nd mantle closure age represents resetting of isotope systematics. This may have resulted from a global wide remelting event. Third, the Moon formed later than currently favored models indicate, such that the lunar mantle closure age is near or at the time of lunar formation. While current Earth-Moon formation constraints cannot exclusively advocate or dismiss any of these models, the fact that U-Pb ages and Hf isotopes for Jack Hills zircons from Australia are best explained by an Earth that re-equilibrated at 4.4 Ga or earlier following the Moon-forming impact, does not favor a later forming Moon. If magma oceans crystallize in a few million years as currently advocated, then a global resetting, possibly by a large impact at 4.40 to 4.34 Ga, such as that which formed the South Pole Aitken Basin, best explains the late mantle closure age for the coupled Sm-Nd isotope systematics presented here.
27-May 2	European Geosciences Union General Assembly, Vienna, Austria
28-29	Interplanetary Small Satellite Conference, Pasadena, California
28-May 1	45th Annual Meeting of the American Astronomical Society's Division on Dynamical Astronomy (DDA 2014), Philadelphia, Pennsylvania
28-May 1	Habitable Worlds Across Time and Space, Baltimore, Maryland
28-May 3	21st Young Scientists' Conference on Astronomy and Space Physics, Kiev, Ukraine

 

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