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 2020The solar wind from a stellar perspective. How do low-resolution data impact the determination of wind properties?

Boro Saikia, S., Jin, M., Johnstone, C. P., Lüftinger, T., Güdel, M., Airapetian, V. S., … Folsom, C. P. (2020). The solar wind from a stellar perspective. How do low-resolution data impact the determination of wind properties? Astronomy & Astrophysics. doi:10.1051/0004-6361/201937107

Possible H2O storage in the crystal structure of CaSiO3 perovskite

Chen, H., Leinenweber, K., Prakapenka, V., Prescher, C., Meng, Y., Bechtel, H., … Shim, S-H. (2020). Possible H2O storage in the crystal structure of CaSiO3 perovskite. Physics of the Earth and Planetary Interiors, 299, 106412. doi:10.1016/j.pepi.2019.106412

Chemical Diversity of Super-Earths As a Consequence of Formation

Scora, J., Valencia, D., Morbidelli, A., & Jacobson, S. (2020). Chemical Diversity of Super-Earths As a Consequence of Formation. Monthly Notices of the Royal Astronomical Society. doi:10.1093/mnras/staa568

January 2020Uranium Isotope Fractionation (238U/235U) during U(VI) Uptake by Freshwater Plankton

Chen, X., Zheng, W., Anbar, A.D. (2020). Uranium Isotope Fractionation (238U/235U) during U(VI) Uptake by Freshwater Plankton. Environmental Science and Technology. doi.org/10.1021/acs.est.9b06421

First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager

Hom, J., Patience, J., Esposito, T. M., Duchêne, G., Worthen, K., Kalas, P., … Zuckerman, B. (2020). First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager. The Astronomical Journal, 159(1), 31. doi:10.3847/1538-3881/ab5af2

Magnesium isotopes of the bulk solar wind from Genesis diamond‐like carbon films

Jurewicz, A. J. G., Rieck, K. D., Hervig, R., Burnett, D. S., Wadhwa, M., Olinger, C. T., … Williams, P. (2020). Magnesium isotopes of the bulk solar wind from Genesis diamond‐like carbon films. Meteoritics & Planetary Science. doi:10.1111/maps.13439

Hydrothermal influence on barite precipitates in the basal Ediacaran Sete Lagoas cap dolostone, São Francisco Craton, central Brazil

Okubo, J., Klyukin, Y. I., Warren, L. V., Matthew Sublett Jr., D., Bodnar, R. J., Gill, B. C., & Xiao, S. (2020). Hydrothermal influence on barite precipitates in the basal Ediacaran Sete Lagoas cap dolostone, São Francisco Craton, central Brazil. Precambrian Research, None, 105628. doi:10.1016/j.precamres.2020.105628

Atmospheric CO2 levels from 2.7 billion years ago inferred from micrometeorite oxidation

Lehmer, O. R., Catling, D. C., Buick, R., Brownlee, D. E., & Newport, S. (2020). Atmospheric CO2 levels from 2.7 billion years ago inferred from micrometeorite oxidation. Science Advances, 6(4), eaay4644. doi:10.1126/sciadv.aay4644

Draft Genome Sequence of Acidianus ambivalens DSM 3772, an Aerobic Thermoacidophilic Sulfur Disproportionator

Bertran, E., Ward, L. M., & Johnston, D. T. (2020). Draft Genome Sequence of Acidianus ambivalens DSM 3772, an Aerobic Thermoacidophilic Sulfur Disproportionator. Microbiology Resource Announcements, 9(3), None. doi:10.1128/mra.01415-19

Draft Genome Sequence of Desulfofundulus thermobenzoicus subsp. thermosyntrophicus DSM 14055, a Moderately Thermophilic Sulfate Reducer

Bertran, E., Ward, L. M., & Johnston, D. T. (2020). Draft Genome Sequence of Desulfofundulus thermobenzoicus subsp. thermosyntrophicus DSM 14055, a Moderately Thermophilic Sulfate Reducer. Microbiology Resource Announcements, 9(3), None. doi:10.1128/mra.01416-19

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