NASA Astrobiology

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Emerging Trends in Comet Taxonomy. “Emerging trends and a comet taxonomy based on the volatile chemistry measured in thirty comets with high-resolution infrared spectroscopy between 1997 and 2013.” in Icarus

Cycles of Glaciation on Ancient Mars. “Climate Cycling on Early Mars Caused by the Carbonate-Silicate Cycle” in Earth and Planetary Astrophysics.

Methane Muted: How Did Early Earth Stay Warm?. “A proper accounting of biogeochemical cycles in the oceans reveals that methane has a much more powerful foe than oxygen.” in PNAS

Emerging Trends in Comet Taxonomy“Emerging trends and a comet taxonomy based on the volatile chemistry measured in thirty comets with high-resolution infrared spectroscopy between 1997 and 2013.” in Icarus01/03

Cycles of Glaciation on Ancient Mars“Climate Cycling on Early Mars Caused by the Carbonate-Silicate Cycle” in Earth and Planetary Astrophysics.02/03

Methane Muted: How Did Early Earth Stay Warm?“A proper accounting of biogeochemical cycles in the oceans reveals that methane has a much more powerful foe than oxygen.” in PNAS03/03

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April 2021Multiple carbon incorporation strategies support microbial survival in cold subseafloor crustal fluids

Trembath-Reichert, E., Shah Walter, S. R., Ortiz, M. A. F., Carter, P. D., Girguis, P. R., & Huber, J. A. (2021). Multiple carbon incorporation strategies support microbial survival in cold subseafloor crustal fluids. Science Advances, 7(18), eabg0153. doi:10.1126/sciadv.abg0153

March 2021A missing link in mid‐late Permian record of north‐eastern Pangea: a sedimentological evaluation of the Permian Belfast Harbour Evaporite Formation of County Antrim, Northern Ireland

Andeskie, A. S., & Benison, K. C. (2021). A missing link in mid‐late Permian record of north‐eastern Pangea: a sedimentological evaluation of the Permian Belfast Harbour Evaporite Formation of County Antrim, Northern Ireland. The Depositional Record. doi:10.1002/dep2.144

Carbon cycle inverse modeling suggests large changes in fractional organic burial are consistent with the carbon isotope record and may have contributed to the rise of oxygen

Krissansen‐Totton, J., Kipp, M. A., & Catling, D. C. (2021). Carbon cycle inverse modeling suggests large changes in fractional organic burial are consistent with the carbon isotope record and may have contributed to the rise of oxygen. Geobiology. doi:10.1111/gbi.12440

New multicellular marine macroalgae from the early Tonian of northwestern Canada

Maloney, K. M., Halverson, G. P., Schiffbauer, J. D., Xiao, S., Gibson, T. M., Lechte, M. A., … Laflamme, M. (2021). New multicellular marine macroalgae from the early Tonian of northwestern Canada. Geology. doi:10.1130/g48508.1

Isotopic evidence for the formation of the Moon in a canonical giant impact

Nielsen, S. G., Bekaert, D. V., & Auro, M. (2021). Isotopic evidence for the formation of the Moon in a canonical giant impact. Nature Communications, 12(1), None. doi:10.1038/s41467-021-22155-7

1I/‘Oumuamua as an N 2 ice fragment of an exo‐pluto surface II: Generation of N 2 ice fragments and the origin of ‘Oumuamua

Desch, S. J., & P Jackson, A. (2021). 1I/‘Oumuamua as an N 2 ice fragment of an exo‐pluto surface II: Generation of N 2 ice fragments and the origin of ‘Oumuamua. Journal of Geophysical Research: Planets. doi:10.1029/2020je006807

A pole-to-equator ocean overturning circulation on Enceladus

Lobo, A. H., Thompson, A. F., Vance, S. D., & Tharimena, S. (2021). A pole-to-equator ocean overturning circulation on Enceladus. Nature Geoscience. doi:10.1038/s41561-021-00706-3

Venus’ Mass Spectra Show Signs of Disequilibria in the Middle Clouds

Mogul, R., Limaye, S. S., Way, M. J., & Cordova, J. A. (2021). Venus’ Mass Spectra Show Signs of Disequilibria in the Middle Clouds. Geophysical Research Letters. doi:10.1029/2020gl091327

ExoMars Mars Organic Molecule Analyzer (MOMA) Laser Desorption/Ionization Mass Spectrometry (LDI-MS) Analysis of Phototrophic Communities from a Silica-Depositing Hot Spring in Yellowstone National Park, USA

Siljeström, S., Li, X., Brinckerhoff, W., Van Amerom, F., & Cady, S. L. (2021). ExoMars Mars Organic Molecule Analyzer (MOMA) Laser Desorption/Ionization Mass Spectrometry (LDI-MS) Analysis of Phototrophic Communities from a Silica-Depositing Hot Spring in Yellowstone National Park, USA. Astrobiology. doi:10.1089/ast.2020.2368

1I/‘Oumuamua as an N 2 ice fragment of an exo‐Pluto surface: I. Size and Compositional Constraints

Jackson, A. P., & Desch, S. J. (2021). 1I/‘Oumuamua as an N 2 ice fragment of an exo‐Pluto surface: I. Size and Compositional Constraints. Journal of Geophysical Research: Planets. doi:10.1029/2020je006706

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