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Mars Reconnaissance Orbiter's Mars Color Imager (MARCI): A New Workflow for Processing Its Image Data
Stuart J. Robbins
The Mars Reconnaissance Orbiter's (MRO's) Mars Color Imager (MARCI) has returned approximately daily, approximately global image data of Mars since late 2006, in up to seven differ…
The CosmoQuest Moon Mappers Community Science Project: The Effect of Incidence Angle on the Lunar Surface Crater Distribution
Matthew Richardson, Andrés A. Plazas Malagón, Larry A. Lebofsky +4
The CosmoQuest virtual community science platform facilitates the creation and implementation of astronomical research projects performed by citizen scientists. One such project, c…
A Statistical Review of Light Curves and the Prevalence of Contact Binaries in the Kuiper Belt
Mark R. Showalter, Susan D. Benecchi, Marc W. Buie +19
We investigate what can be learned about a population of distant KBOs by studying the statistical properties of their light curves. Whereas others have successfully inferred the pr…
The science case for spacecraft exploration of the Uranian satellites: Candidate ocean worlds in an ice giant system
Richard J. Cartwright, Chloe B. Beddingfield, Tom A. Nordheim +15
The 27 satellites of Uranus are enigmatic, with dark surfaces coated by material that could be rich in organics. Voyager 2 imaged the southern hemispheres of Uranus' five largest '…
Persephone: A Pluto-System Orbiter and Kuiper Belt Explorer
Carly Howett, Stuart Robbins, Bryan J. Holler +40
Persephone is a NASA concept mission study that addresses key questions raised by New Horizons' encounters with Kuiper Belt objects (KBOs), with arguably the most important being "…
In Situ Geochronology for the Next Decade: Mission Designs for the Moon, Mars, and Vesta
Barbara A. Cohen, Kelsey E. Young, Nicolle E. B. Zellner +27
Geochronology, or determination of absolute ages for geologic events, underpins many inquiries into the formation and evolution of planets and our Solar System. Absolute ages of an…
Impact Craters on Pluto and Charon and Terrain Age Estimates
Kelsi N. Singer, Sarah Greenstreet, Paul M. Schenk +2
Pluto's terrains display a diversity of crater retention ages ranging from areas with no identifiable craters to heavily cratered terrains. This variation in crater densities is co…
Initial results from the New Horizons exploration of 2014 MU69, a small Kuiper Belt Object
S. A. Stern, H. A. Weaver, J. R. Spencer +202
The Kuiper Belt is a distant region of the Solar System. On 1 January 2019, the New Horizons spacecraft flew close to (486958) 2014 MU69, a Cold Classical Kuiper Belt Object, a cla…
The Geology and Geophysics of Kuiper Belt Object (486958) Arrokoth
J. R. Spencer, S. A. Stern, J. M. Moore +75
The Cold Classical Kuiper Belt, a class of small bodies in undisturbed orbits beyond Neptune, are primitive objects preserving information about Solar System formation. The New Hor…
Mars Obliquity History Constrained by Elliptic Crater Orientations
Samuel J. Holo, Edwin S. Kite, Stuart J. Robbins
The dynamics of Mars' obliquity are believed to be chaotic, and the historical ~3.5 Gyr (late-Hesperian onward) obliquity probability density function (PDF) is high uncertain and c…
Formation of Charon's Red Poles From Seasonally Cold-Trapped Volatiles
W. M. Grundy, D. P. Cruikshank, G. R. Gladstone +38
A unique feature of Pluto's large satellite Charon is its dark red northern polar cap. Similar colours on Pluto's surface have been attributed to organic macromolecules produced by…
Impact Craters on Pluto and Charon Indicate a Deficit of Small Kuiper Belt Objects
K. N. Singer, W. B. McKinnon, B. Gladman +20
The flyby of Pluto and Charon by the New Horizons spacecraft provided high-resolution images of cratered surfaces embedded in the Kuiper belt, an extensive region of bodies orbitin…
Great Expectations: Plans and Predictions for New Horizons Encounter with Kuiper Belt Object 2014 MU69 ('Ultima Thule')
Jeffrey M. Moore, William B. McKinnon, Dale P. Cruikshank +31
The New Horizons encounter with the cold classical Kuiper Belt object (KBO) 2014 MU69 (informally named 'Ultima Thule,' hereafter Ultima) on 1 January 2019 will be the first time a…
The Geology of Pluto and Charon Through the Eyes of New Horizons
Jeffrey M. Moore, William B. McKinnon, John R. Spencer +38
NASA's New Horizons spacecraft has revealed the complex geology of Pluto and Charon. Pluto's encounter hemisphere shows ongoing surface geological activity centered on a vast basin…
The Small Satellites of Pluto as Observed by New Horizons
H. A. Weaver, M. W. Buie, B. J. Buratti +48
The New Horizons mission has provided resolved measurements of Pluto's moons Styx, Nix, Kerberos, and Hydra. All four are small, with equivalent spherical diameters of 40…
The Pluto system: Initial results from its exploration by New Horizons
S. A. Stern, F. Bagenal, K. Ennico +148
The Pluto system was recently explored by NASA's New Horizons spacecraft, making closest approach on 14 July 2015. Pluto's surface displays diverse landforms, terrain ages, albedos…
The variability of crater identification among expert and community crater analysts
Stuart J. Robbins, Irene Antonenko, Michelle R. Kirchoff +8
The identification of impact craters on planetary surfaces provides important information about their geological history. Most studies have relied on individual analysts who map an…