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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February 2020Extraterrestrial, shock-formed, cage-like nanostructured carbonaceous materials

Németh, P., & Garvie, L. A. J. (2020). Extraterrestrial, shock-formed, cage-like nanostructured carbonaceous materials. American Mineralogist, 105(2), 276–281. doi:10.2138/am-2020-7305

Hints on the origins of particle traps in protoplanetary disks given by the M_dust-M_* relation

Pinilla, P., Pascucci, I., & Marino, S. (2020). Hints on the origins of particle traps in protoplanetary disks given by the M_dust-M_* relation. Astronomy & Astrophysics. doi:10.1051/0004-6361/201937003

Dark biological superoxide production as a significant flux and sink of marine dissolved oxygen

Sutherland, K. M., Wankel, S. D., & Hansel, C. M. (2020). Dark biological superoxide production as a significant flux and sink of marine dissolved oxygen. Proceedings of the National Academy of Sciences, 117(7), 3433–3439. doi:10.1073/pnas.1912313117

Primordial organic matter in the xenolithic clast in the Zag H chondrite: Possible relation to D/P asteroids

Kebukawa, Y., Zolensky, M. E., Ito, M., Ogawa, N. O., Takano, Y., Ohkouchi, N., … Kobayashi, K. (2020). Primordial organic matter in the xenolithic clast in the Zag H chondrite: Possible relation to D/P asteroids. Geochimica et Cosmochimica Acta, 271, 61–77. doi:10.1016/j.gca.2019.12.012

Prebiotic Peptides: Molecular Hubs in the Origin of Life

Frenkel-Pinter, M., Samanta, M., Ashkenasy, G., & Leman, L. J. (2020). Prebiotic Peptides: Molecular Hubs in the Origin of Life. Chemical Reviews. doi:10.1021/acs.chemrev.9b00664

Vesicle paleobarometry in the Pongola Supergroup: A cautionary note and guidelines for future studies

Goosmann, E. A., Buick, R., Catling, D. C., Luskin, C., & Nhleko, N. (2020). Vesicle paleobarometry in the Pongola Supergroup: A cautionary note and guidelines for future studies. South African Journal of Geology. doi:10.25131/sajg.123.0005

A one-billion-year-old multicellular chlorophyte

Tang, Q., Pang, K., Yuan, X., & Xiao, S. (2020). A one-billion-year-old multicellular chlorophyte. Nature Ecology & Evolution. doi:10.1038/s41559-020-1122-9

Extremely Long Convergence Times in a 3D GCM Simulation of the Sub-Neptune Gliese 1214b

Wang, H., & Wordsworth, R. (2020). Extremely Long Convergence Times in a 3D GCM Simulation of the Sub-Neptune Gliese 1214b. The Astrophysical Journal, 891(1), 7. doi:10.3847/1538-4357/ab6dcc

Duplication of leucyl-tRNA synthetase in an archaeal extremophile may play a role in adaptation to variable environmental conditions

Weitzel, C. S., Li, L., Zhang, C., Eilts, K. K., Bretz, N. M., Gatten, A. L., … Martinis, S. A. (2020). Duplication of leucyl-tRNA synthetase in an archaeal extremophile may play a role in adaptation to variable environmental conditions. Journal of Biological Chemistry, None, jbc.RA118.006481. doi:10.1074/jbc.ra118.006481

Olivine‐Carbonate Mineralogy of the Jezero Crater Region

Brown, A. J., Viviano, C. E., & Goudge, T. A. (2020). Olivine‐Carbonate Mineralogy of the Jezero Crater Region. Journal of Geophysical Research: Planets, 125(3), None. doi:10.1029/2019je006011

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