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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September 2022Calcium isotope constraints on OIB and MORB petrogenesis: The importance of melt mixing

Eriksen, Z. T., & Jacobsen, S. B. (2022). Calcium isotope constraints on OIB and MORB petrogenesis: The importance of melt mixing. Earth and Planetary Science Letters, 593, 117665. doi:10.1016/j.epsl.2022.117665

Mercury isotope evidence for a non-volcanic origin of Hg spikes at the Ordovician-Silurian boundary, South China

Shen, J., Algeo, T. J., & Feng, Q. (2022). Mercury isotope evidence for a non-volcanic origin of Hg spikes at the Ordovician-Silurian boundary, South China. Earth and Planetary Science Letters, 594, 117705. doi:10.1016/j.epsl.2022.117705

August 2022An authigenic response to Ediacaran surface oxidation: Remarkable micron-scale isotopic heterogeneity revealed by SIMS

Cui, H., Kitajima, K., Orland, I. J., Baele, J-M., Xiao, S., Kaufman, A. J., … Valley, J. W. (2022). An authigenic response to Ediacaran surface oxidation: Remarkable micron-scale isotopic heterogeneity revealed by SIMS. Precambrian Research, 377, 106676. doi:10.1016/j.precamres.2022.106676

The interplay between twinning and cation inversion in MgAl2O4-spinel: Implications for a nebular thermochronometer

Manga, V. R., Muralidharan, K., & Zega, T. J. (2022). The interplay between twinning and cation inversion in MgAl2O4-spinel: Implications for a nebular thermochronometer. American Mineralogist, 107(8), 1470–1476. doi:10.2138/am-2021-7874

Microbial Populations Are Shaped by Dispersal and Recombination in a Low Biomass Subseafloor Habitat

Anderson, R. E., Graham, E. D., Huber, J. A., & Tully, B. J. (2022). Microbial Populations Are Shaped by Dispersal and Recombination in a Low Biomass Subseafloor Habitat. mBio. doi:10.1128/mbio.00354-22

July 2022Prebiotic synthesis of α-amino acids and orotate from α-ketoacids potentiates transition to extant metabolic pathways

Pulletikurti, S., Yadav, M., Springsteen, G., & Krishnamurthy, R. (2022). Prebiotic synthesis of α-amino acids and orotate from α-ketoacids potentiates transition to extant metabolic pathways. Nature Chemistry. doi:10.1038/s41557-022-00999-w

The Shuram excursion: A response to climate extremes at the dawn of animal life

Bergmann, K., Osburn, M. R., Wilcots, J., Cantine, M., Grotzinger, J. P., Fischer, W. W., … Bonifacie, M. (2022). The Shuram excursion: A response to climate extremes at the dawn of animal life. None. doi:10.1002/essoar.10511917.1

Wet streaks in the McMurdo Dry Valleys, Antarctica: Implications for Recurring Slope Lineae on Mars

Toner, J. D., Sletten, R. S., Liu, L., Catling, D. C., Ming, D. W., Mushkin, A., & Lin, P-C. (2022). Wet streaks in the McMurdo Dry Valleys, Antarctica: Implications for Recurring Slope Lineae on Mars. Earth and Planetary Science Letters, 589, 117582. doi:10.1016/j.epsl.2022.117582

Sources and Fluxes of Organic Carbon and Energy to Microorganisms in Global Marine Sediments

Bradley, J. A., Arndt, S., Amend, J. P., Burwicz-Galerne, E., & LaRowe, D. E. (2022). Sources and Fluxes of Organic Carbon and Energy to Microorganisms in Global Marine Sediments. Frontiers in Microbiology, 13, None. doi:10.3389/fmicb.2022.910694

Anoxic photochemical weathering of pyrite on Archean continents

Hao, J., Liu, W., Goff, J. L., Steadman, J. A., Large, R. R., Falkowski, P. G., & Yee, N. (2022). Anoxic photochemical weathering of pyrite on Archean continents. Science Advances, 8(26), None. doi:10.1126/sciadv.abn2226

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