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Ralph E. Milliken

Ralph E. Milliken

D-Index & Metrics

Earth Science

D-Index
67
Citations
19308
World Ranking
1202
National Ranking
546

Overview

Ralph E. Milliken is affiliated with Brown University in the United States. Their research focuses primarily on fields related to physics and astronomy, with a significant concentration on astronomy and astrophysics. Milliken's work extensively covers planetary science and exploration, astro and planetary science, isotope analysis in ecology, geological and geochemical analysis, space science and extraterrestrial life, high-pressure geophysics and materials, as well as geology and paleoclimatology research.

Milliken has published research in a variety of scientific venues, demonstrating engagement with both specialized and broad audiences. Frequent publication venues include Icarus, Journal of Geophysical Research Planets, Zenodo (CERN European Organization for Nuclear Research), Meteoritics and Planetary Science, and Geochimica et Cosmochimica Acta. This diverse range of journals indicates a multidisciplinary approach within planetary and geophysical sciences.

Collaborations form a notable part of Milliken's scholarly activities, with frequent coauthors including Tomoki Nakamura, M. Matsuoka, T. Hiroi, Shogo Tachibana, and Eri Tatsumi. These colleagues have collectively contributed to planetary geology, asteroid studies, and related disciplines.

Some recent papers authored in collaboration with others highlight the scope and focus of their research. These include:

  • Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples (2022), published in Science
  • Asteroid (101955) Bennu in the laboratory: Properties of the sample collected by OSIRIS-REx (2024), published in Meteoritics and Planetary Science
  • Thermally altered subsurface material of asteroid (162173) Ryugu (2021), published in Nature Astronomy
  • Updated Perspectives and Hypotheses on the Mineralogy of Lower Mt. Sharp, Mars, as Seen From Orbit (2020), published in Journal of Geophysical Research Planets
  • Merging Perspectives on Secondary Minerals on Mars: A Review of Ancient Water-Rock Interactions in Gale Crater Inferred from Orbital and In-Situ Observations (2021), published in Minerals

The topics addressed in these works reflect planetary science themes such as asteroid composition and evolution, Mars mineralogy, water-rock interactions, and sample-return analysis. Milliken's involvement in studies of Ryugu and Bennu asteroids corresponds with broader efforts to understand solar system formation and evolution through direct sample analysis.

Best Publications

  • A habitable fluvio-lacustrine environment at Yellowknife Bay, Gale crater, Mars.

    J. P. Grotzinger;D. Y. Sumner;L. C. Kah;K. Stack

  • Hydrated silicate minerals on Mars observed by the Mars Reconnaissance Orbiter CRISM instrument

    John F. Mustard;Scott L. Murchie;S. M. Pelkey;B. L. Ehlmann

  • Recent ice ages on Mars

    James W. Head;John F. Mustard;Mikhail A. Kreslavsky;Ralph E. Milliken

  • Orbital Identification of Carbonate-Bearing Rocks on Mars

    Bethany L. Ehlmann;John F. Mustard;Scott L. Murchie;Francois Poulet

  • Identification of hydrated silicate minerals on Mars using MRO‐CRISM: Geologic context near Nili Fossae and implications for aqueous alteration

    Bethany L. Ehlmann;John F. Mustard;Gregg A. Swayze;Roger N. Clark

  • Mineralogy of a Mudstone at Yellowknife Bay, Gale Crater, Mars

    D.T. Vaniman;D.L. Bish;D.W. Ming;T.F. Bristow

  • Deposition, exhumation, and paleoclimate of an ancient lake deposit, Gale crater, Mars.

    J.P. Grotzinger;S. Gupta;M. C. Malin;D.M. Rubin

  • A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter

    Scott L. Murchie;John F. Mustard;Bethany L. Ehlmann;Ralph E. Milliken

  • Direct evidence of surface exposed water ice in the lunar polar regions

    Shuai Li;Shuai Li;Paul G. Lucey;Ralph E. Milliken;Paul O. Hayne

  • Paleoclimate of Mars as captured by the stratigraphic record in Gale Crater

    R. E. Milliken;J. P. Grotzinger;B. J. Thomson

  • Temporal and Spatial Variability of Lunar Hydration As Observed by the Deep Impact Spacecraft

    Jessica M. Sunshine;Tony L. Farnham;Lori M. Feaga;Olivier Groussin

  • Volatile and organic compositions of sedimentary rocks in Yellowknife Bay, Gale crater, Mars.

    Douglas W. Ming;P. D. Archer;D. P. Glavin;J. L. Eigenbrode

  • CRISM multispectral summary products: Parameterizing mineral diversity on Mars from reflectance

    S. M. Pelkey;J. F. Mustard;S. Murchie;R. T. Clancy

  • Phyllosilicate diversity and past aqueous activity revealed at Mawrth Vallis, Mars

    Janice L. Bishop;Eldar Z Noe Dobrea;Nancy K. McKeown;Mario Parente

  • Opaline silica in young deposits on Mars

    Ralph E. Milliken;Gregg A. Swayze;Raymond E. Arvidson;Janice L Bishop

  • Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples

    Unknown

  • The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

    K. Kitazato;R. E. Milliken;T. Iwata;T. Iwata;M. Abe;M. Abe

  • Constraints on the origin and evolution of the layered mound in Gale Crater, Mars using Mars Reconnaissance Orbiter data

    B.J. Thomson;N.T. Bridges;R. Milliken;A. Baldridge

  • Redox stratification of an ancient lake in Gale crater, Mars

    J. A. Hurowitz;J. P. Grotzinger;W. W. Fischer;S. M. McLennan

  • Viscous flow features on the surface of Mars: Observations from high‐resolution Mars Orbiter Camera (MOC) images

    R. E. Milliken;J. F. Mustard;D. L. Goldsby

  • In Situ Radiometric and Exposure Age Dating of the Martian Surface

    K. A. Farley;C. Malespin;P. Mahaffy;J. P. Grotzinger

Frequent Co-Authors

Scott L. Murchie
Scott L. Murchie Johns Hopkins University Applied Physics Laboratory
John F. Mustard
John F. Mustard Brown University
John P. Grotzinger
John P. Grotzinger California Institute of Technology
François Poulet
François Poulet University of Paris-Saclay
Janice L. Bishop
Janice L. Bishop Search for Extraterrestrial Intelligence
Bethany L. Ehlmann
Bethany L. Ehlmann University of Colorado Boulder
Gregg A. Swayze
Gregg A. Swayze United States Geological Survey
Jeffrey E. Moersch
Jeffrey E. Moersch University of Tennessee at Knoxville
William V. Boynton
William V. Boynton University of Arizona
James J. Wray
James J. Wray Georgia Institute of Technology

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