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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November 2020An assessment of iron isotope fractionation during core formation

Shahar, A., & Young, E. D. (2020). An assessment of iron isotope fractionation during core formation. Chemical Geology, 554, 119800. doi:10.1016/j.chemgeo.2020.119800

October 2020Absolute dating of the L-chondrite parent body breakup with high-precision U–Pb zircon geochronology from Ordovician limestone

Liao, S., Huyskens, M. H., Yin, Q-Z., & Schmitz, B. (2020). Absolute dating of the L-chondrite parent body breakup with high-precision U–Pb zircon geochronology from Ordovician limestone. Earth and Planetary Science Letters, 547, 116442. doi:10.1016/j.epsl.2020.116442

Early diagenesis of organic-rich marls under shifting suboxic to euxinic conditions: The lower Toarcian of the Bächental basin

Neumeister, S., Misch, D., Algeo, T. J., Gawlick, H-J., Gratzer, R., & Sachsenhofer, R. F. (2020). Early diagenesis of organic-rich marls under shifting suboxic to euxinic conditions: The lower Toarcian of the Bächental basin. Marine and Petroleum Geology, 120, 104513. doi:10.1016/j.marpetgeo.2020.104513

September 2020Phase transformation of hydrous ringwoodite to the lower-mantle phases and the formation of dense hydrous silica

Chen, H., Leinenweber, K., Prakapenka, V., Kunz, M., Bechtel, H. A., Liu, Z., & Shim, S-H. (2020). Phase transformation of hydrous ringwoodite to the lower-mantle phases and the formation of dense hydrous silica. American Mineralogist, 105(9), 1342–1348. doi:10.2138/am-2020-7261

August 2020Metal grains in lunar rocks as indicators of igneous and impact processes

Day, J. M. D. (2020). Metal grains in lunar rocks as indicators of igneous and impact processes. Meteoritics & Planetary Science. doi:10.1111/maps.13544

Sierra Gorda 009: A new member of the metal‐rich G chondrites grouplet

Ivanova, M. A., Lorenz, C. A., Humayun, M., Corrigan, C. M., Ludwig, T., Trieloff, M., … Grokhovsky, V. I. (2020). Sierra Gorda 009: A new member of the metal‐rich G chondrites grouplet. Meteoritics & Planetary Science. doi:10.1111/maps.13546

Anoxic photogeochemical oxidation of manganese carbonate yields manganese oxide

Liu, W., Hao, J., Elzinga, E. J., Piotrowiak, P., Nanda, V., Yee, N., & Falkowski, P. G. (2020). Anoxic photogeochemical oxidation of manganese carbonate yields manganese oxide. Proceedings of the National Academy of Sciences, None, 202002175. doi:10.1073/pnas.2002175117

Prebiotic origin of pre‐RNA building blocks in a urea “warm little pond” scenario.

Menor-Salvan, C., Bouza, M., Fialho, D. M., Burcar, B. T., Fernández, F. M., & Hud, N. V. (2020). Prebiotic origin of pre‐RNA building blocks in a urea “warm little pond” scenario.. ChemBioChem. doi:10.1002/cbic.202000510

Complex nanostructures in diamond

Németh, P., McColl, K., Garvie, L. A. J., Salzmann, C. G., Murri, M., & McMillan, P. F. (2020). Complex nanostructures in diamond. Nature Materials. doi:10.1038/s41563-020-0759-8

Cryo‐Electron Microscopy Visualization of a Large Insertion in the 5S ribosomal RNA of the Extremely Halophilic Archaeon Halococcus morrhuae .

Tirumalai, M. R., Kaelber, J. T., Park, D. R., Tran, Q., & Fox, G. E. (2020). Cryo‐Electron Microscopy Visualization of a Large Insertion in the 5S ribosomal RNA of the Extremely Halophilic Archaeon Halococcus morrhuae .. FEBS Open Bio. doi:10.1002/2211-5463.12962

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