J. Radebaugh
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View article: A Comprehensive Framework for Assessing Terrestrial Analogue Field Sites for Ocean Worlds
A Comprehensive Framework for Assessing Terrestrial Analogue Field Sites for Ocean Worlds Open
Field studies at terrestrial analogue sites represent an important contribution to the science of ocean worlds. The value of the science and technology investigations conducted at field analogue sites depends on the relevance of the analog…
View article: JunoCam Observations of Io
JunoCam Observations of Io Open
During multiple Juno encounters with Io in 2023 and 2024, the spacecraft's imaging system, JunoCam, acquired approximately one hundred images of Io. These images have a range of scales down to 1 km per pixel, and covered more than half of …
View article: Synchronized Eruptions on Io: Evidence of Interconnected Subsurface Magma Reservoirs
Synchronized Eruptions on Io: Evidence of Interconnected Subsurface Magma Reservoirs Open
On December 27, 2024, Juno’s JIRAM infrared instrument detected an extraordinary volcanic event in Io’s southern hemisphere, spanning approximately 65,000 km² near 73°S, 140°E. The estimated total power output ranges from 140 to 260 terawa…
View article: Comparing NASA Discovery and New Frontiers Class Mission Concepts for the Io Volcano Observer
Comparing NASA Discovery and New Frontiers Class Mission Concepts for the Io Volcano Observer Open
Jupiter’s moon Io is a highly compelling target for future exploration that offers critical insight into tidal dissipation processes and the geology of high heat flux worlds, including primitive planetary bodies, such as the early Earth, t…
View article: From Xanadu Around and Back: A ca. 11,000 km Journey of Windblown Sand Revealed by Global Dune Patterns on Titan
From Xanadu Around and Back: A ca. 11,000 km Journey of Windblown Sand Revealed by Global Dune Patterns on Titan Open
Extensive dune fields nearly encircle the equatorial regions of Titan, Saturn's largest moon. Dunes evolve in response to environmental change, offering a record of recent geologic and climate history. A global analysis reveals that Titan'…
View article: Widespread Occurrence of Lava Lakes on Io Observed From Juno
Widespread Occurrence of Lava Lakes on Io Observed From Juno Open
We report recent observations of lava lakes within patera on Io made by the JIRAM (Jovian InfraRed Auroral Mapper) imager on board the Juno spacecraft, taken during close observations that occurred during the extended mission. At least 40 …
View article: Comparing NASA Discovery and New Frontiers Class Mission Concepts for the Io Volcano Observer (IVO)
Comparing NASA Discovery and New Frontiers Class Mission Concepts for the Io Volcano Observer (IVO) Open
Jupiter's moon Io is a highly compelling target for future exploration that offers critical insight into tidal dissipation processes and the geology of high heat flux worlds, including primitive planetary bodies, such as the early Earth, t…
View article: Eolian landforms and processes on Titan and role in material movement 
Eolian landforms and processes on Titan and role in material movement  Open
The surface of Titan is composed of varied geomorphic units indicative of a vivid depositional, erosional and tectonic history. Dominant at Titan's equatorial regions are vast eolian landscapes of dunes, sand sheets, yardangs and wind stre…
View article: Updated inventory of Titan Organics
Updated inventory of Titan Organics Open
No abstract available.
View article: Complementary classifications of aeolian dunes based on morphology, dynamics, and fluid mechanics
Complementary classifications of aeolian dunes based on morphology, dynamics, and fluid mechanics Open
Dunes form where winds blow over a bed of mobile sediment grains – conditions that are common in our solar system. On Earth, dunes abound in arid continental interiors and along sandy coastlines. Dune fields have also been recognized…
View article: An intrusive cryomagmatic origin for northern radial labyrinth terrains on Titan and implications for the presence of crustal clathrates
An intrusive cryomagmatic origin for northern radial labyrinth terrains on Titan and implications for the presence of crustal clathrates Open
Titan's labyrinth terrains are an organic-rich, topographically elevated, highly dissected and puzzling geomorphic unit. How these features came to be composed of organics and remain elevated may hold clues about Titan's complicated histor…
View article: Improving Groundwater Imputation through Iterative Refinement Using Spatial and Temporal Correlations from In Situ Data with Machine Learning
Improving Groundwater Imputation through Iterative Refinement Using Spatial and Temporal Correlations from In Situ Data with Machine Learning Open
Obtaining and managing groundwater data is difficult as it is common for time series datasets representing groundwater levels at wells to have large gaps of missing data. To address this issue, many methods have been developed to infill or…
View article: An Extensionally Fractured Upper Lithosphere on Io
An Extensionally Fractured Upper Lithosphere on Io Open
The Jovian moon Io features hundreds of paterae, broad depressions often filled with lava. The largest such example, Loki Patera, features a large, polygonal, and fractured island in its center. This island may reflect the fragmentation of…
View article: The Cycles Driving Io’s Tectonics
The Cycles Driving Io’s Tectonics Open
Io is famous for its active volcanoes, but its vigorous tectonics, which are unlike Earth’s plate tectonics, are no less remarkable. The nature of Io’s thick, cold, brittle lithosphere has been revealed through decades of investigations. T…
View article: Planetary Caves: A Solar System View of Processes and Products
Planetary Caves: A Solar System View of Processes and Products Open
We provide the first solar system wide compendium of speleogenic processes and products. An examination of 15 solar system bodies revealed that six cave‐forming processes occur beyond Earth including volcanic (cryo and magmatic), fracturin…
View article: Landscapes of the Argentine Puna Reveal Conditions and Processes on Wind-Eroded Planetary Surfaces
Landscapes of the Argentine Puna Reveal Conditions and Processes on Wind-Eroded Planetary Surfaces Open
<p><strong>Abstract</strong></p> <p>Wind-dominated landscapes can be found on all Solar System bodies with atmospheres. These landscapes record the point of interaction of the atmosphere with the solid surface…
View article: Dune length, width and orientation in the sand seas of Titan reveal regional properties
Dune length, width and orientation in the sand seas of Titan reveal regional properties Open
<p>Large linear dunes are found in great abundance across the equatorial regions of Saturn&#8217;s moon Titan. They are similar in width and spacing to the large dunes of the Saharan, Arabian and Namibian deserts, indicating atmo…
View article: Science Goals and Objectives for the Dragonfly Titan Rotorcraft Relocatable Lander
Science Goals and Objectives for the Dragonfly Titan Rotorcraft Relocatable Lander Open
NASA’s Dragonfly mission will send a rotorcraft lander to the surface of Titan in the mid-2030s. Dragonfly's science themes include investigation of Titan’s prebiotic chemistry, habitability, and potential chemical biosignatures from both …
View article: Persephone: A Pluto-system Orbiter and Kuiper Belt Explorer
Persephone: A Pluto-system Orbiter and Kuiper Belt Explorer Open
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, “Does Pluto have a subsurface ocean?” More broadly, Perseph…
View article: Titan: Earth-like on the Outside, Ocean World on the Inside
Titan: Earth-like on the Outside, Ocean World on the Inside Open
Thanks to the Cassini–Huygens mission, Titan, the pale orange dot of Pioneer and Voyager encounters, has been revealed to be a dynamic, hydrologically shaped, organic-rich ocean world offering unparalleled opportunities to explore prebioti…
View article: Recommendations for Addressing Priority Io Science in the Next Decade
Recommendations for Addressing Priority Io Science in the Next Decade Open
Io is a priority destination for solar system exploration. The scope and importance of science questions at Io necessitates a broad portfolio of research and analysis, telescopic observations, and planetary missions - including a dedicated…
View article: Aeolian Processes and Landforms Across the Solar System: Science and Technology Requirements for the Next Decade
Aeolian Processes and Landforms Across the Solar System: Science and Technology Requirements for the Next Decade Open
Aeolian processes and phenomena have sculpted landscapes and influenced planetary climate states across the Solar System, including planetary bodies with transient atmospheres. This white paper highlights the need for a planetary aeolian g…
View article: The Science Case for a Titan Flagship-class Orbiter with Probes
The Science Case for a Titan Flagship-class Orbiter with Probes Open
International audience
View article: Maximizing the Value of Solar System Data Through Planetary Spatial Data Infrastructures
Maximizing the Value of Solar System Data Through Planetary Spatial Data Infrastructures Open
Planetary spatial data returned by spacecraft, including images and higher-order products such as mosaics, controlled basemaps, and digital elevation models (DEMs), are of critical importance to NASA, its commercial partners and other spac…
View article: Planetary Geologic Mapping
Planetary Geologic Mapping Open
Whitepaper #408 submitted to the Planetary Science and Astrobiology Decadal Survey 2023-2032. Topics: surface/geological evolution; other science themes: Mapping Solar System bodies; state of the profession
View article: The Science Case for Io Exploration
The Science Case for Io Exploration Open
Io is a priority destination for solar system exploration, as it is the best natural laboratory to study the intertwined processes of tidal heating, extreme volcanism, and atmosphere-magnetosphere interactions. Io exploration is relevant t…