J. M. Moore
A5027781676- Astro and Planetary Science
- Planetary Science and Exploration
- Geology and Paleoclimatology Research
- Space Exploration and Technology
- Isotope Analysis in Ecology
- Geological and Geochemical Analysis
- Geomagnetism and Paleomagnetism Studies
- Marine and environmental studies
- Stellar, planetary, and galactic studies
- Paleontology and Stratigraphy of Fossils
- Space Science and Extraterrestrial Life
- Methane Hydrates and Related Phenomena
- Geological formations and processes
- Spacecraft and Cryogenic Technologies
- Gamma-ray bursts and supernovae
- Aeolian processes and effects
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Space Satellite Systems and Control
- Solar and Space Plasma Dynamics
- Scientific Research and Discoveries
- Hydrocarbon exploration and reservoir analysis
- Maritime and Coastal Archaeology
- Astrophysics and Star Formation Studies
- Geochemistry and Geologic Mapping
Ames Research Center
2016-2025
Jet Propulsion Laboratory
2007-2022
National Aeronautics and Space Administration
2012-2022
Search for Extraterrestrial Intelligence
1993-2022
Planetary Systems (United States)
2017
University of Washington
2016
California State University, San Marcos
2014
University of Virginia
2007-2011
Goddard Space Flight Center
1993-2007
Johns Hopkins University Applied Physics Laboratory
2007
New Horizons' views of Pluto The flyby and its moon Charon by the Horizons spacecraft generated news coverage around world. Now Stern et al. report first scientific results from high-speed encounter. surface is surprisingly diverse, with large regions differing brightness composition. There ample evidence for ongoing rich geological processes that act to sculpt surface. Charon's similarly complex, numerous relief structures varied coloration. Pluto's atmosphere extensive but less dense than...
To explain the much higher denudation rates and valley network development on early Mars (>∼3.6 Gyr ago), most investigators have invoked either steady state warm/wet (Earthlike) or cold/dry (modern Mars) end‐member paleoclimates. Here we discuss evidence that highland gradation was prolonged, but generally slow possibly ephemeral during Noachian Period, immature networks entrenched a brief terminal epoch of more erosive fluvial activity in late to Hesperian. Observational support for...
We present evidence that a final epoch of widespread fluvial erosion and deposition in the cratered highlands during latest Noachian or early to mid‐Hesperian was characterized by integration flow within drainage networks as long 4000 km trunk valley incision 50 350 m into earlier depositional basins. Locally deltaic sediments were deposited where incised systems debouched Large alluvial fans sediment from alcoves steep crater walls probably formed contemporaneously. The depth below surfaces...
New Horizons unveils the Pluto system In July 2015, spacecraft flew through at high speed, humanity's first close look this enigmatic on outskirts of our solar system. a series papers, team present their analysis encounter data downloaded so far: Moore et al. complex surface features and geology its large moon Charon, including evidence tectonics, glacial flow, possible cryovolcanoes. Grundy analyzed colors chemical compositions surfaces, with ices H 2 O, CH 4 , CO, N NH 3 reddish material...
New Horizons unveils the Pluto system In July 2015, spacecraft flew through at high speed, humanity's first close look this enigmatic on outskirts of our solar system. a series papers, team present their analysis encounter data downloaded so far: Moore et al. complex surface features and geology its large moon Charon, including evidence tectonics, glacial flow, possible cryovolcanoes. Grundy analyzed colors chemical compositions surfaces, with ices H 2 O, CH 4 , CO, N NH 3 reddish material...
Abstract The goal of NASA’s Europa Clipper mission is to assess the habitability Jupiter’s moon Europa. After entering Jupiter orbit in 2030, flight system will collect science data while flying past 49 times at typical closest approach distances 25–100 km. mission’s objectives are investigate Europa’s interior (ice shell and ocean), composition, geology; also search for characterize any current activity including possible plumes. be accomplished with a payload consisting remote sensing...
Several dozen distinct alluvial fans, 10 to ∼40 km long downslope, have been observed in highlands craters. Within a search region between 0° and 30°S, fan‐containing craters were found only 18° 29°S, they all occur at around ±1 of the MOLA‐defined Martian datum. study area are not randomly distributed but instead form three clusters. Fans typically descend >1 from where disgorge their alcoves. Longitudinal profiles show that surfaces very slightly concave with mean slope 2°. Many fans...
Home Plate is a layered plateau in Gusev crater on Mars. It composed of clastic rocks moderately altered alkali basalt composition, enriched some highly volatile elements. A coarsegrained lower unit lies under finer-grained upper unit. Textural observations indicate that the strata were emplaced an explosive event, and geochemical considerations favor volcanic origin over impact origin. The likely represents accumulation pyroclastic materials, whereas may represent eolian reworking same materials.
Fluvial deposits in a basin north of Holden crater exhibiting sinuous, anabranching pattern are deltaic or fan origin. Channel width and meander wavelength indicate persistent flow magnitudes about 700 m 3 /s. If these flows were produced by quasi‐periodic climate episodes involving typical terrestrial‐style precipitation, the deposit required thousands to millions years accumulate. However, scenario deposition during few short constant heavy precipitation resulting from large impacts cannot...
Opportunity has investigated in detail rocks on the rim of Noachian age Endeavour crater, where orbital spectral reflectance signatures indicate presence Fe +3 -rich smectites. The are associated with fine-grained, layered containing spherules diagenetic or impact origin. overlain by breccias, and both units cut calcium sulfate veins precipitated from fluids that circulated after impact. Compositional data for fractures suggest formation Al-rich smectites aqueous leaching. Evidence is thus...
The Kuiper Belt is a distant region of the Solar System. On 1 January 2019, New Horizons spacecraft flew close to (486958) 2014 MU69, Cold Classical Object, class objects that have never been heated by Sun and are therefore well preserved since their formation. Here we describe initial results from these encounter observations. MU69 bi-lobed contact binary with flattened shape, discrete geological units, noticeable albedo heterogeneity. However, there little surface color compositional No...
Research Article| March 01, 2013 Fluvial features on Titan: Insights from morphology and modeling Devon M. Burr; Burr † 1Earth Planetary Sciences Department, University of Tennessee–Knoxville, 1412 Circle Drive, Knoxville, Tennessee 37996-1410, USA †E-mail: dburr1@utk.edu Search for other works by this author on: GSW Google Scholar J. Taylor Perron; Perron 2Department Earth, Atmospheric, Sciences, Massachusetts Institute Technology, 77 Avenue, Cambridge, 02139, Michael P. Lamb; Lamb...
Impact craters on Pluto and Charon Collisions between Solar System bodies produce impact large objects at a rate that depends the population of impacting small bodies. Singer et al. examined its moon Charon. Some regions have had their erased by recent geological processes, but others appear to record 4 billion years impacts. Because are located in Kuiper belt, distribution crater sizes reflects size belt (KBOs). The authors found fewer KBOs than predicted models collision equilibrium,...
The prospect of a future soft landing on the surface Europa is enticing, as it would create science opportunities that could not be achieved through flyby or orbital remote sensing, with direct relevance to Europa's potential habitability. Here, we summarize lander concept, developed by our NASA-commissioned Science Definition Team. concept concentrates observations can best in situ examination from its surface. We discuss suggested objectives and investigations for mission, along model...
The surface of Pluto is more geologically diverse and dynamic than had been expected, but the role its tenuous atmosphere in shaping landscape remains unclear. We describe observations from New Horizons spacecraft regularly spaced, linear ridges whose morphology, distribution, orientation are consistent with being transverse dunes. These located close to mountainous regions orthogonal nearby wind streaks. demonstrate that wavelength dunes (~0.4 1 kilometer) best explained by deposition...
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 $\approx$40 km for Nix Hydra ~10 Styx Kerberos. They also highly elongated, maximum to minimum axis ratios $\approx$2. have high albedos ( $\approx$50-90 %) suggestive a water-ice surface composition. Crater densities on imply ages $\gtrsim$ 4 Ga. small rotate much faster than synchronous, rotational poles clustered nearly...