Explanipedia

Large-scale Roughness Properties of the Lunar North and South Polar Regions as Measured by the Lunar Orbiter Laser Altimeter (LOLA) Open

M. K. Barker, E. Mazarico, G. A. Neumann, David E. Smith, M. T. Zuber , et al. · 2025

The lunar polar regions are high-priority targets for scientific investigation and exploration. To aid these endeavors, we produced enhanced altimetry data from the Lunar Orbiter Laser Altimeter for the north polar region, from which we co…

Near-infrared Photometry of the Moon’s Surface with Passive Radiometry from the Lunar Orbiter Laser Altimeter (LOLA) Open

R. T. Walker, M. K. Barker, E. Mazarico, Xiaoli Sun, G. A. Neumann , et al. · 2024

Examining the reflectance of the Moon’s surface across a broad range of viewing geometries through photometric analysis can reveal physical and geological properties of its regolith. Since 2013 December, the Lunar Orbiter Laser Altimeter (…

Impact History of the Moon Open

B. A. Cohen, W. F. Bottke, Marc Norman, C. H. van der Bogert, C. I. Fassett , et al. · 2023

The bombardment history of the Earth-Moon system has been debated since the first recognition that the circular features on the Moon may be impact craters. Because the lunar impact record is the only planetary impact record to be calibrate…

Constraining the Structure under Lunar Impact Basins with Gravity Open

David E. Smith, Sander Goossens, G. A. Neumann, M. T. Zuber · 2023

The lunar gravity field is used to estimate and constrain the depth of mass anomalies under 19 major lunar impact basins. We use radial gravitational spectra, consisting of accelerations computed either per spherical harmonic degree or cum…

A New View of the Lunar South Pole from the Lunar Orbiter Laser Altimeter (LOLA) Open

M. K. Barker, E. Mazarico, G. A. Neumann, David E. Smith, M. T. Zuber , et al. · 2023

Upcoming missions to the lunar south pole require detailed maps over large areas to fully characterize landing sites locally and regionally and to place their data into proper geologic context. To that end, we enhanced the Lunar Orbiter La…

Rotational states and shapes of Ryugu and Bennu: Implications for interior structure and strength Open

J. H. Roberts, O. S. Barnouin, M. G. Daly, K. J. Walsh, M. C. Nolan , et al. · 2021

Callisto: A Guide to the Origin of the Jupiter System Open

David E. Smith, F. Nimmo, K. K. Khurana, C. L. Johnson, M. A. Wieczorek , et al. · 2021

Recommendations for Addressing Priority Io Science in the Next Decade Open

J. T. Keane, A. A. Ahern, F. Bagenal, Amy C. Barr Mlinar, Ko Basu , et al. · 2021

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…

Science Opportunities offered by Mercury’s Ice-Bearing Polar Deposits Open

A. N. Deutsch, N. L. Chabot, Abhisek Maiti, A. Luspay‐Kuti, Ákos Kereszturi , et al. · 2021

The presence of meters-thick polar deposits exposed directly on the surface of Mercury provides unique science opportunities that should be prioritized in the next decade of planetary exploration.The poles of Mercury provide a natural labo…

New Frontiers Titan Orbiter Open

Jason W. Barnes, Alexander G. Hayes, J. M. Soderblom, Shannon MacKenzie, Jason D. Hofgartner , et al. · 2021

As one of two planetary objects (other than Earth) that have solid surfaces,thick atmospheres, and astrobiological significance, Titan, like Mars, merits ongoing studywith multiple spacecraft. We propose that a Titan orbiter dedicated to g…

The Science Case for Io Exploration Open

J. T. Keane, A. A. Ahern, F. Bagenal, Amy C. Barr Mlinar, Ko Basu , et al. · 2021

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…

Cloud Catalog from Mars Orbiter Laser Altimeter / Mars Global Surveyor Data Using Machine Learning Algorithms Open

Vincent Caillé, Anni Määttänen, Aymeric Spiga, Lola Falletti, G. A. Neumann · 2021

In the development of Mars climate models, modeling clouds is an important challenge, and especially for CO2 clouds<…

Unsupervised Machine Learning Algorithms to Detect CO2 Clouds on Mars Open

Vincent Caillé, Anni Määttänen, Aymeric Spiga, Lola Falleti, G. A. Neumann · 2020

Modeling clouds is a challenge we are currently facing in the development of Mars climate models. In particular, CO2 clouds are exotic components of the Mars’ atmosphere that may imply rethinking some microphysical theo…

Co-registration of MOLA profiles to HRSC DTMs for mapping local seasonal ice cover height variations at the Martian poles Open

Haifeng Xiao, Alexander Stark, Gregor Steinbrügge, G. A. Neumann, Jürgen Oberst · 2020

AbstractWe propose the co-registration of local laser profile segments to high resolution Digital Terrain Models (DTMs) as an approach for obtaining seasonal CO2 ice cover height variations on Mars. The co-registration…

Latest update of Mercury geodetic parameters with altimetric crossovers from the Mercury Laser Altimeter (MLA) Open

S. Bertone, E. Mazarico, M. K. Barker, Sander Goossens, G. A. Neumann , et al. · 2020

Based on previous applications of laser altimetry to planetary geodesy at GSFC [Mazarico et al. (2014)], we use the recently developed PyXover software package to analyze altimetric crossovers from the Mercury Laser Altimeter (MLA) and imp…

Author Correction: Shape of (101955) Bennu indicative of a rubble pile with internal stiffness Open

O. S. Barnouin, M. G. Daly, E. E. Palmer, R. W. Gaskell, J. R. Weirich , et al. · 2020

The Roughness Properties of Small Ice-Bearing Craters at the South Pole of the Moon: Implications for Accessing Fresh Water Ice in Future Surface Operations Open

A. N. Deutsch, J. W. Head, G. A. Neumann · 2020

The lunar poles provide a fascinating thermal environment capable of cold-trapping water ice on geologic timescales [1]. While there have been many observations indicating the presence of water ice at the lunar surface [e.g., 24], it is st…

Deriving the ancient lunar pole path from impact induced gravity anomalies Open

David E. Smith, M. T. Zuber, Sander Goossens, G. A. Neumann, E. Mazarico · 2020

The large anomalies in the lunar gravity field are in most cases the result of large impacts that occurred more than 3 billion years ago.  Today those anomalies provide the stability of the lunar rotation and if removed w…

The mass flux of volatiles from volcanic eruptions on Mercury Open

A. N. Deutsch, J. W. Head, S. W. Parman, L. Wilson, G. A. Neumann , et al. · 2020

Mercury has been extensively resurfaced by large, effusive lava plains [1–2]. Similar lava plains on the Moon, the maria, are known to contain volatiles [3–4] and are estimated to have outgassed ~101…

New Analysis of Mercury Laser Altimeter Crossovers to Improve Geodetic Constraints by MESSENGER Open

S. Bertone, E. Mazarico, M. K. Barker, Sander Goossens, Terence J. Sabaka , et al. · 2019

2019 American Geophysical Union Meeting; December 09, 2019 - December 13, 2019; San Francisco, CA; United States

High‐Resolution Gravity Field Models from GRAIL Data and Implications for Models of the Density Structure of the Moon's Crust Open

Sander Goossens, Terence J. Sabaka, M. A. Wieczorek, G. A. Neumann, E. Mazarico , et al. · 2019

We present our latest high‐resolution lunar gravity field model of degree and order 1200 in spherical harmonics using Gravity Recovery and Interior Laboratory (GRAIL) data. In addition to a model with the standard spectral Kaula regulariza…

Shape of (101955) Bennu indicative of a rubble pile with internal stiffness Open

O. S. Barnouin, M. G. Daly, E. E. Palmer, R. W. Gaskell, J. R. Weirich , et al. · 2019

Geodetic Evidence That Mercury Has A Solid Inner Core Open

Antonio Genova, Sander Goossens, E. Mazarico, F. G. Lemoine, G. A. Neumann , et al. · 2019

Geodetic analysis of radio tracking measurements of the MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft while in orbit about Mercury has yielded new estimates for the planet's gravity field, tidal Love number, and …

Shape of (101955) Bennu indicative of a rubble pile with internal stiffness Open

O. S. Barnouin, M. G. Daly, E. E. Palmer, R. W. Gaskell, J. R. Weirich , et al. · 2019

Geodetic Evidence That Mercury Has A Solid Inner Core Open

Antonio Genova, Sander Goossens, E. Mazarico, F. G. Lemoine, G. A. Neumann , et al. · 2019

Geodetic analysis of radio tracking measurements of the MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft while in orbit about Mercury has yielded new estimates for the planet's gravity field, tidal Love number, and …

The thickness of radar-bright deposits in Mercury's northern hemisphere from individual Mercury Laser Altimeter tracks Open

H. C. M. Susorney, P. B. James, C. L. Johnson, N. L. Chabot, C. M. Ernst , et al. · 2019

Remote Sensing of Antarctic Sea Ice with Coordinated Aircraft and Satellite Data Acquisitions Open

S. V. Nghiem, Thomas Busche, Thomas Kraus, Markus Bachmann, N. T. Kurtz , et al. · 2018

Remote sensing of Antarctic sea ice is required to characterize properties of the vast sea ice cover to understand its long-term increase in contrast to the decrease of Arctic sea ice. For this objective, the OIB/TanDEM-X Coordinated Scien…

Trilogy, a planetary geodesy mission concept for measuring the expansion of the solar system Open

David E. Smith, M. T. Zuber, E. Mazarico, Antonio Genova, G. A. Neumann , et al. · 2018

The scale of the solar system is slowly changing, likely increasing as a result of solar mass loss, with additional change possible if there is a secular variation of the gravitational constant, G. The measurement of the change of s…

Trilogy, a planetary geodesy mission concept for measuring the expansion of the solar system Open

E. Mazarico, G. A. Neumann, Xiaoli Sun, M. H. Torrence, Dandan Mao , et al. · 2018

Solar system expansion and strong equivalence principle as seen by the NASA MESSENGER mission Open

Antonio Genova, E. Mazarico, Sander Goossens, F. G. Lemoine, G. A. Neumann , et al. · 2018

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