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 2018The Neoproterozoic Hüttenberg δ 13 C anomaly: Genesis and global implications

Cui, H., Kaufman, A. J., Peng, Y., Liu, X-M., Plummer, R. E., & Lee, E. I. (2018). The Neoproterozoic Hüttenberg δ 13 C anomaly: Genesis and global implications. Precambrian Research, 313, 242–262. doi:10.1016/j.precamres.2018.05.024

Sulfur-isotope evidence for recovery of seawater sulfate concentrations from a PTB minimum by the Smithian-Spathian transition

Stebbins, A., Algeo, T. J., Olsen, C., Sano, H., Rowe, H., & Hannigan, R. (2018). Sulfur-isotope evidence for recovery of seawater sulfate concentrations from a PTB minimum by the Smithian-Spathian transition. Earth-Science Reviews. doi:10.1016/j.earscirev.2018.08.010

Nitrous oxide from chemodenitrification: A possible missing link in the Proterozoic greenhouse and the evolution of aerobic respiration

Stanton, C. L., Reinhard, C. T., Kasting, J. F., Ostrom, N. E., Haslun, J. A., Lyons, T. W., & Glass, J. B. (2018). Nitrous oxide from chemodenitrification: A possible missing link in the Proterozoic greenhouse and the evolution of aerobic respiration. Geobiology. doi:10.1111/gbi.12311

Minimal Heterochiral de Novo Designed 4Fe–4S Binding Peptide Capable of Robust Electron Transfer

Kim, J. D., Pike, D. H., Tyryshkin, A. M., Swapna, G. V. T., Raanan, H., Montelione, G. T., … Falkowski, P. G. (2018). Minimal Heterochiral <i>de Novo</i> Designed 4Fe–4S Binding Peptide Capable of Robust Electron Transfer. Journal of the American Chemical Society, 140(36), 11210–11213. doi:10.1021/jacs.8b07553

The geology of the Navua Valles region of Mars

Hargitai, H. I., Gulick, V. C., & Glines, N. H. (2018). The geology of the Navua Valles region of Mars. Journal of Maps, 14(2), 504–508. doi:10.1080/17445647.2018.1496858

Phylogenomics of colistin-susceptible and resistant XDR Acinetobacter baumannii

Mustapha, M. M., Li, B., Pacey, M. P., Mettus, R. T., McElheny, C. L., Marshall, C. W., … Doi, Y. (2018). Phylogenomics of colistin-susceptible and resistant XDR Acinetobacter baumannii. Journal of Antimicrobial Chemotherapy, 73(11), 2952–2959. doi:10.1093/jac/dky290

Low Energy STEM-EELS Characterization of Primitive Organic Matter and Silicates in the Meteorite LAP 02342

De Gregorio, B. T., Stroud, R. M., Nittler, L. R., Alexander, C. M. O. D., Davidson, J., Moyano-Cambero, C. E., & Trigo-Rodrlguez, J. M. (2018). Low Energy STEM-EELS Characterization of Primitive Organic Matter and Silicates in the Meteorite LAP 02342. Microscopy and Microanalysis, 24(S1), 2074–2075. doi:10.1017/s1431927618010851

Low-Voltage Transmission Electron Microscopy Analysis of 15N-Rich Organic Matter: Insight into the Origins of Fine-Grained Antarctic Micrometeorites

Haenecour, P. (2018). Low-Voltage Transmission Electron Microscopy Analysis of 15N-Rich Organic Matter: Insight into the Origins of Fine-Grained Antarctic Micrometeorites. Microscopy and Microanalysis, 24(S1), 2076–2077. doi:10.1017/s1431927618010863

Low-Voltage Energy-Dispersive X-ray Spectroscopy and Electron Energy-Loss Spectroscopy Analysis of Presolar Graphite Spherules

Haenecour, P., Howe, J. Y., Zega, T. J., Amari, S., Floss, C., Wallace, P., … Muto, A. (2018). Low-Voltage Energy-Dispersive X-ray Spectroscopy and Electron Energy-Loss Spectroscopy Analysis of Presolar Graphite Spherules. Microscopy and Microanalysis, 24(S1), 2110–2111. doi:10.1017/s1431927618011030

Comparison of GEMS in interplanetary dust particles and GEMS-like objects in a Stardust impact track in aerogel

Ishii, H. A. (2018). Comparison of GEMS in interplanetary dust particles and GEMS-like objects in a Stardust impact track in aerogel. Meteoritics & Planetary Science. doi:10.1111/maps.13182

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