NASA Astrobiology

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A volcanically active planet is shown in closeup at the left side of the image with glowing eruptions and lines of lava on the surface. To the right and in the distance is a faint blue glowing ball representing the more massive planet in the system.

Sixteen frames from Voyager 1's flyby of Jupiter in 1979 were merged to create this image. Jupiter's Great Red Spot is visible in the center. Jupiter's moon Europa can be seen in the foreground at the bottom left of the image.

The frame is a horizontal rainbow of color on a grid. Shadows of molecules can be seen through the light as well as the jagged peaks and troughs of spectral lines.

Fizzy Super Earths and Lava Worlds“Fizzy Super-Earths: Impacts of Magma Composition on the Bulk Density and Structure of Lava Worlds.” in The Astrophysical Journal.01/03

Identifying Hydrothermal Activity on Icy Ocean Worlds“Ethene-ethanol ratios as potential indicators of hydrothermal activity at Enceladus, Europa, and other icy ocean worlds.” In Icarus.02/03

NASA Raman Spectroscopic Database"The NASA Raman spectroscopic database: Ramdb version 1.00.” In Icarus.03/03

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August 2019PAH Products and Processing by Different Energy Sources

Cruz-Diaz, G. A., Erickson, S. E., Silveira, E. F. d., Ricca, A., De Barros, A. L. F., Da Costa, C. A. P., … Mattioda, A. L. (2019). PAH Products and Processing by Different Energy Sources. The Astrophysical Journal, 882(1), 44. doi:10.3847/1538-4357/ab311f

Titanium Isotopic Fractionation in Kilauea Iki Lava Lake Driven by Oxide Crystallization

Johnson, A. C., Aarons, S. M., Dauphas, N., Xike Nie, N., Zeng, H., Helz, R. T., … Anbar, A. D. (2019). Titanium Isotopic Fractionation in Kilauea Iki Lava Lake Driven by Oxide Crystallization. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2019.08.022

Bis(dimethylamino)phosphorodiamidate: A Reagent for the Regioselective Cyclophosphorylation of cis-Diols Enabling One-Step Access to High-Value Target Cyclophosphates

Yadav, M., & Krishnamurthy, R. (2019). Bis(dimethylamino)phosphorodiamidate: A Reagent for the Regioselective Cyclophosphorylation of cis-Diols Enabling One-Step Access to High-Value Target Cyclophosphates. Organic Letters. doi:10.1021/acs.orglett.9b02694

Does the Evolution of Complex Life Depend on the Stellar Spectral Energy Distribution?

Haqq-Misra, J. (2019). Does the Evolution of Complex Life Depend on the Stellar Spectral Energy Distribution? Astrobiology. doi:10.1089/ast.2018.1946

Venus as a Laboratory for Exoplanetary Science

Kane, S. R., Arney, G., Crisp, D., Domagal‐Goldman, S., Glaze, L. S., Goldblatt, C., … Zahnle, K. J. (2019). Venus as a Laboratory for Exoplanetary Science. Journal of Geophysical Research: Planets, 124(8), 2015–2028. doi:10.1029/2019je005939

The formation of Jupiter’s diluted core by a giant impact

Liu, S-F., Hori, Y., Müller, S., Zheng, X., Helled, R., Lin, D., & Isella, A. (2019). The formation of Jupiter’s diluted core by a giant impact. Nature, 572(7769), 355–357. doi:10.1038/s41586-019-1470-2

Assessing the Intrinsic Uncertainty and Structural Stability of Planetary Models: 1. Parameterized Thermal‐Tectonic History Models

Seales, J., Lenardic, A., & Moore, W. B. (2019). Assessing the Intrinsic Uncertainty and Structural Stability of Planetary Models: 1. Parameterized Thermal‐Tectonic History Models. Journal of Geophysical Research: Planets, 124(8), 2213–2232. doi:10.1029/2019je005918

July 2019Complex Microbial Communities Drive Iron and Sulfur Cycling in Arctic Fjord Sediments

Buongiorno, J., Herbert, L. C., Wehrmann, L. M., Michaud, A. B., Laufer, K., Røy, H., … Lloyd, K. G. (2019). Complex Microbial Communities Drive Iron and Sulfur Cycling in Arctic Fjord Sediments. Applied and Environmental Microbiology, 85(14), None. doi:10.1128/aem.00949-19

De novo design of symmetric ferredoxins that shuttle electrons in vivo

Mutter, A. C., Tyryshkin, A. M., Campbell, I. J., Poudel, S., Bennett, G. N., Silberg, J. J., … Falkowski, P. G. (2019). De novo design of symmetric ferredoxins that shuttle electrons in vivo. Proceedings of the National Academy of Sciences, 116(29), 14557–14562. doi:10.1073/pnas.1905643116

Combined mass-dependent and nucleosynthetic isotope variations in refractory inclusions and their mineral separates to determine their original Fe isotope compositions

Shollenberger, Q. R., Wittke, A., Render, J., Mane, P., Schuth, S., Weyer, S., … Brennecka, G. A. (2019). Combined mass-dependent and nucleosynthetic isotope variations in refractory inclusions and their mineral separates to determine their original Fe isotope compositions. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2019.07.021

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