SJ
Member Since 2018
Sarah Johnson
Professor, Georgetown University
AGU Research
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Extreme Niche Partitioning and Microbial Dark Matter in a Mauna Loa Lava Tube
JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS
05 june 2023
Chloe Fishman, Julie G. Bevilacqua, Aria Hahn, Con...
Lava tubes are key targets in the search for life on Mars. Their basaltic walls provide protection from radiation and changing environmental condit...
Life Underground: Investigating Microbial Communities and Their Biomarkers in Mars‐Analog Lava Tubes at Craters of the Moon National Monument and Preserve
JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS
25 november 2022
Margaret M. Weng, Elena Zaikova, Maëva Millan, Amy...
Craters of the Moon National Monument and Preserve (CotM) is a strong terrestrial analog for lava tube formations on Mars. The commonality of its b...
Sedimentary Organics in Glen Torridon, Gale Crater, Mars: Results From the SAM Instrument Suite and Supporting Laboratory Analyses
JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS
12 november 2022
Maëva Millan, Amy J. Williams, Amy McAdam, Jennife...
The Sample Analysis at Mars (SAM) suite instrument on board NASA's Curiosity rover has characterized the inorganic and organic chemical composition...
Evolved Gas Analyses of Sedimentary Rocks From the Glen Torridon Clay‐Bearing Unit, Gale Crater, Mars: Results From the Mars Science Laboratory Sample Analysis at Mars Instrument Suite
JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS
26 september 2022
Amy McAdam, Brad Sutter, Paul D. Archer, Heather F...
Evolved gas analysis (EGA) data from the Sample Analysis at Mars (SAM) instrument suite indicated Fe‐rich smectite, carbonate, oxidized organ...
Choosing the Right Tools for the Job: Life-Detection Payloads for Mars
PREPARING FOR ASTROBIOLOGY MISSIONS THROUGH SCIENCE AUTONOMY (ML, DATA SCIENCE), MODELING, LABORATORY AND FIELD ANALOG STUDIES III ORAL
ocean worlds near and far | 20 may 2022
Amy J. Williams, Haley Boles, Kathleen L Craft, Al...
With the exploration by the Curiosity and Perseverance rovers, and upcoming Mars Sample Return, we are developing a more nuanced understanding of Mars...
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THE TRANSFORMATION OF BIOSIGNATURES ON THE IRRADIATED MARTIAN SURFACE
PREPARING FOR ASTROBIOLOGY MISSIONS THROUGH SCIENCE AUTONOMY (ML, DATA SCIENCE), MODELING, LABORATORY AND FIELD ANALOG STUDIES III ORAL
ocean worlds near and far | 20 may 2022
Anaïs Roussel, Anjali Y. Britto, Amy McAdam, Cheri...
Mars used to be habitable until it lost its magnetic field around four billion years ago, after which the planet’s surface was exposed to heavy radiat...
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Investigating the Circadian Rhythms of a Hypersaline Saltern
SALTY GOODNESS II: RETURN OF THE BRINES I ORAL: IN MEMORIAM OF RONALD OREMLAND
ocean worlds near and far | 18 may 2022
Margaret M. Weng, Benjamin Klempay, Luke Fisher, J...
Gene expression varies from day to night as life adjusts to the corresponding changes in the environment, and this regulatory feedback is an important...
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Habitability of a Mars-Analog Subsurface Lava Tube Environment
PLANETARY CAVES AND VOIDS AS TARGETS FOR ASTROBIOLOGY SCIENCE I ORAL
subsurface habitability and life | 18 may 2022
Amy McAdam, Cherie Achilles, Dina M. Bower, Chloe ...
Subsurface environments, such as lava tubes, may provide habitable conditions and preserve biosignatures on Mars. Here we investigated a lava tube on ...
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