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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June 2020The non-glacial and non-cratonic origin of an early Archean felsic volcaniclastic unit, Barberton Greenstone Belt, South Africa

Lowe, D. R., & Byerly, G. R. (2020). The non-glacial and non-cratonic origin of an early Archean felsic volcaniclastic unit, Barberton Greenstone Belt, South Africa. Precambrian Research, 341, 105647. doi:10.1016/j.precamres.2020.105647

May 2020A coupled carbon-silicon cycle model over Earth history: Reverse weathering as a possible explanation of a warm mid-Proterozoic climate

Krissansen-Totton, J., & Catling, D. C. (2020). A coupled carbon-silicon cycle model over Earth history: Reverse weathering as a possible explanation of a warm mid-Proterozoic climate. Earth and Planetary Science Letters, 537, 116181. doi:10.1016/j.epsl.2020.116181

March 2020Synthesis and base-pairing properties of pyrazine nucleic acids

Gately, M., Wong, S., Peoples, J., Galamay, D., Delgado, G., Weber, A. L., & Campbell, T. (2020). Synthesis and base-pairing properties of pyrazine nucleic acids. Nucleosides, Nucleotides & Nucleic Acids, None, 1–26. doi:10.1080/15257770.2020.1711525

Draft Genome Sequence of Desulfurobacterium thermolithotrophum Strain HR11, a Novel Thermophilic Autotrophic Subspecies from a Deep-Sea Hydrothermal Vent

Holden, J. F., Bardwell, C. P., & Kashyap, S. (2020). Draft Genome Sequence of Desulfurobacterium thermolithotrophum Strain HR11, a Novel Thermophilic Autotrophic Subspecies from a Deep-Sea Hydrothermal Vent. Microbiology Resource Announcements, 9(13), None. doi:10.1128/mra.00167-20

Redox fluctuations, trace metal enrichment and phosphogenesis in the ∼2.0 Ga Zaonega Formation

Kipp, M. A., Lepland, A., & Buick, R. (2020). Redox fluctuations, trace metal enrichment and phosphogenesis in the ∼2.0 Ga Zaonega Formation. Precambrian Research, None, 105716. doi:10.1016/j.precamres.2020.105716

Draft Genome Sequence of Desulfovibrio sulfodismutans ThAc01, a Heterotrophic Sulfur-Disproportionating Member of the Desulfobacterota

Ward, L. M., Bertran, E., & Johnston, D. T. (2020). Draft Genome Sequence of Desulfovibrio sulfodismutans ThAc01, a Heterotrophic Sulfur-Disproportionating Member of the Desulfobacterota. Microbiology Resource Announcements, 9(13), None. doi:10.1128/mra.00202-20

Discovery of the oldest bilaterian from the Ediacaran of South Australia

Evans, S. D., Hughes, I. V., Gehling, J. G., & Droser, M. L. (2020). Discovery of the oldest bilaterian from the Ediacaran of South Australia. Proceedings of the National Academy of Sciences, None, 202001045. doi:10.1073/pnas.2001045117

Ferromanganese crusts as recorders of marine dissolved oxygen

Sutherland, K. M., Wostbrock, J. A. G., Hansel, C. M., Sharp, Z. D., Hein, J. R., & Wankel, S. D. (2020). Ferromanganese crusts as recorders of marine dissolved oxygen. Earth and Planetary Science Letters, 533, 116057. doi:10.1016/j.epsl.2019.116057

Formation of primitive achondrites by partial melting of alkali-undepleted planetesimals in the inner solar system

Collinet, M., & Grove, T. L. (2020). Formation of primitive achondrites by partial melting of alkali-undepleted planetesimals in the inner solar system. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2020.03.004

Widespread production of silica- and alkali-rich melts at the onset of planetesimal melting

Collinet, M., & Grove, T. L. (2020). Widespread production of silica- and alkali-rich melts at the onset of planetesimal melting. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2020.03.005

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