Vision and Voyages for Planetary Science in the - Solar System ...

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main findings and recommendations suitable for distribution to the general public; and a CD-ROM or DVD collection of all three components that can be easily and inexpensively disseminated. In order to impact preparation of FY13 budget submissions, the major findings and prioritized recommendations of the survey should be submitted to NSF and NASA by March 31, 2011. PREPUBLICATION COPY—SUBJECT TO FURTHER EDITORIAL CORRECTION A-5
B White Papers One of the defining features of a decadal survey is broad community participation. One of the most important ways to ensure that the planetary science community played a major role in providing input to this report was the creation of a mechanism by which individuals and groups of individual researchers could submit white papers directly to the committee. White papers on all topics of relevance to the survey were strongly encouraged and the community was made aware of this via community newsletters, open letters to the community distributed using several relevant email explorers, and through personal solicitations during town hall meetings. To facilitate document management, several submission guidelines were imposed. These included imposition of a seven-page limit (in a pre-specified format), transmission to the committee via a specific individual (the submitting author) through a special NRC website, and a submission deadline of 15 September, 2009, designed to ensure that all contributions were available for consideration and discussion no later than the second meetings of both the steering group and the five panels. Everyone in the planetary science community was encouraged to author white papers. However, members of the committee’s steering group and the chairs of panels were discouraged from doing so on the grounds that they should appear to maintain a degree of impartiality. In total, 199 white papers were received and are listed below alphabetically by their respective submitting author. Most, but not all, had multiple authors. Indeed, multiple authorship was specifically encouraged by the committee on the grounds that consensus is more compelling that a single viewpoint. To facility consensus and to advertize what white papers were in preparation, the Lunar and Planetary Institute established a web site where potential authors could state their intentions to draft a white paper on a specific topic and, thus, accrete coauthors. Some particular whitepapers attracted a hierarchy of authors, co-authors, supporters, and endorsers; sometimes running into the hundreds. The committee made no attempt to keep track of the identities and affiliations of those individuals whose only contribution to a particular document was to add their name to it. The committee was able to identify 1669 unique individuals as authors or co-authors of at least one white papers (Table B.1) For comparison, some 380 individuals contributed 24 white papers in support of the first planetary decadal process. The energy, financial resources, and time devoted by the planetary community to this process is both gratifying to the committee and clear evidence of broad desire among the community to openly discuss and set priorities to guide our future activities related to the study of the solar system and planetary systems in general. PREPUBLICATION COPY—SUBJECT TO FURTHER EDITORIAL CORRECTION B-1
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PREPUBLICATION COPY Subject to Furt
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The National Academy of Sciences is
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COMMITTEE ON THE PLANETARY SCIENCE
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STAFF DAVID H. SMITH, Senior Progra
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Preface Strategic planning activiti
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statement of task’s call for “i
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Understand the Processes That Contr
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Executive Summary In recent years,
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however, that the Discovery program
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• Jupiter Europa Orbiter (descope
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TABLE ES.2 Medium Class Missions—
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Summary This report was requested b
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• Recent volcanic activity on Ven
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Mission Study Process and Technical
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Near the end of the past decade, NA
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• Mars Astrobiology Explorer-Cach
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development, and descoped or cancel
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Plausible circumstances could impro
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Data Distribution and Archiving Dat
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Sample curation facilities are crit
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consider making equivalent systems
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committee concluded that for the mo
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alanced ground-based solar astronom
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1 Introduction to Planetary Science
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THE 2002 SOLAR SYSTEM EXPLORATION D
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Medium The first decadal survey ide
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FIGURE 1.6 Victoria crater as image
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FIGURE 1.8 The mirror for the Large
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FIGURE 1.10 From a comet, to the de
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• The committee’s programmatic
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• Opportunities for joint venture
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FIGURE 1.14 Schematic showing the f
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2 National and International Progra
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FIGURE 2.3 Sand dunes on Mars photo
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NASA’s Earth Science Division Pla
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More recently, among the goals of t
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FIGURE 2.6 A natural bridge on the
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investigations should still be deve
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FIGURE 2.10 The surface of Titan as
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3 Shared objectives that incorporat
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3 Priority Questions in Planetary S
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• How have the myriad chemical an
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How Did the Giant Planets and Their
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heavy bombardment? Clues to address
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Did Mars or Venus Host Ancient Aque
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We lack critical geophysical data a
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detected in time. The report conclu
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How Have the Myriad of Chemical and
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13. P.R. Estrada, I. Mosqueira, J.J
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51. M.J. Mumma, G.L. Villanueva, R.
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4 The Primitive Bodies: Building Bl
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FIGURE 4.1 Asteroids and comet nucl
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• How do the compositions of pres
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Future Directions for Investigation
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Astrobiology is the study of the or
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Important Questions Some important
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observations of the outer parts of
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Sample Curation and Laboratory Faci
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In the previous decadal survey, CCS
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asteroid (either ice-rock or metal-
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hazard. Asteroid 433 Eros, one of t
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BOX 4.1 The Discovery Program, Vita
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ody exploration can be achieved by
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34. H.H. Hsieh and D. Jewitt. 2006.
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FIGURE 5.1 Mercury, Venus, and the
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Constrain the Bulk Composition of t
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from Venus Express and Galileo may
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• Understand the composition and
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• Is there evidence of environmen
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Important Questions Some important
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timescales, including the possible
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that may have fostered life, there
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• Venus In Situ Explorer • Sout
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FIGURE 5.3 Venus’s climate is con
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Important scientific objectives tha
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BOX 5.1 Planetary Roadmaps Roadmaps
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4. D.J. Lawrence, W.C. Feldman, J.O
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6 Mars: Evolution of an Earth-like
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BOX 6.1 Mars Science Laboratory Sch
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live there now?”—both key compo
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characteristics (water, gradients i
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availability, physicochemical facto
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UNDERSTAND THE PROCESSES AND HISTOR
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FIGURE 6.4 Examples of recent clima
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particularly the polar-layered depo
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FIGURE 6.6 Geologic time sequence o
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planets and for understanding subse
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experiments, compounded by the unce
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Curation Martian samples require sc
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particle sizes, wavelength ranges,
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environmental conditions including
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Mars Polar Climate Mission As a fol
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R.E. Arvidson, C.C. Allen, D.J. Des
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27. J. Grotzinger, J.F. Bell III, W
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B.M. Jakosky and R.J. Phillips. 200
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72. White papers received by decada
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(MRR-SAG). Posted by the Mars Explo
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the solar system formed. Understand
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FIGURE 7.2 Left: This Hubble image
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temperatures, helium is enhanced in
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FIGURE 7.4 The intrinsic specific l
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Investigate the Chemistry of Giant
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Jupiters seen around other stars in
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• What causes the enormous differ
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FIGURE 7.5 Top: This composite comp
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EXPLORING THE GIANT PLANET’S ROLE
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destroy areas of land equivalent to
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• Assess tidal evolution within g
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• What processes drive the visibl
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esolution visible and near-infrared
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INTERCONNECTIONS Links to Other Par
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SUPPORTING RESEARCH AND RELATED ACT
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FIGURE 7.10 Our atmosphere blocks l
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Cassini Solstice Mission ADVANCING
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8. Determine the composition, struc
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Summary To achieve the primary goal
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Outer Solar System; William B. McKi
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TABLE 8.1 Characteristics of the La
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organisms live there now?” Titan
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• Why are Titan and Callisto appa
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Callisto but unlike Ganymede. This
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valuable window into solar system h
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FIGURE 8.6 Multiple jets, dominated
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FIGURE 8.8 Schematic of the complex
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orbits of Io and Europa), and poten
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Cassini has revealed that most of t
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satellite interiors should include
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hardened technology for Io and Gany
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FIGURE 8.11 After a comprehensive t
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FIGURE 8.12 Galileo color image of
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Titan Saturn System Mission Many Ti
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1. What is the nature of Enceladus
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the majority of the Jupiter Europa
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7. O. Mousis, J.I. Lunine, M. Pasek
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45. K.K. Khurana, M.G. Kivelson, K.
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9 Recommended Flight Investigations
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All of the recommendations below ar
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As discussed in more detail below,
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• Ensure that there are adequate
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TABLE 9.2 Discovery Program Mission
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overarching questions in Chapter 3.
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These five were selected from the s
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The Mars community, in their inputs
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should immediately undertake an eff
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Page 307 and 308: partnership with the Department of
Page 309 and 310: 10 Planetary Science Research and I
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Page 346 and 347: A Letter of Request and Statement o
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Page 366 and 367: Lunar Lander Network⎯Four Landers
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Page 372 and 373: Flagship‐class Europa Orbiter SOU
Page 374 and 375: Saturn Atmospheric Entry Probe SOUR
Page 376 and 377: Enceladus Orbiter Spacecraft SOURCE
Page 378 and 379: Uranus Orbiter with Entry Probe SOU
Page 380 and 381: SUMMARY Linked technical, cost, and
Page 382 and 383: Overview The purpose of this rapid
Page 384 and 385: Conclusions Based on analyses of th
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Page 388 and 389: • Characterize the local meteorol
Page 390 and 391: • Characterize Ganymede’s uniqu
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Page 398 and 399: Biosphere: The life zone of Earth o
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EPOXI: The name of the extended mis
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Late heavy bombardment: A postulate
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Nili Fossae region: A fracture in t
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Protoplanet: A planet in the proces
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Stardust: A spacecraft launched in
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G Mission and Technology Study Repo
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