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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September 2018Theoretical and experimental evidence of conformational transformation in stereoisomers of nucleoside analogues

Hernández-Hernández, L. A., Yi, R., Cleaves, H. J., Fuentes-Cabrera, M., Sumpter, B. G., Hernández-Hernández, A., … Vallejo, E. (2018). Theoretical and experimental evidence of conformational transformation in stereoisomers of nucleoside analogues. International Journal of Quantum Chemistry, None, e25714. doi:10.1002/qua.25714

Ocean tidal heating in icy satellites with solid shells

Matsuyama, I., Beuthe, M., Hay, H. C. F. C., Nimmo, F., & Kamata, S. (2018). Ocean tidal heating in icy satellites with solid shells. Icarus, 312, 208–230. doi:10.1016/j.icarus.2018.04.013

Ediacaran scavenging as a prelude to predation

Gehling, J. G., & Droser, M. L. (2018). Ediacaran scavenging as a prelude to predation. Emerging Topics in Life Sciences, 2(2), 213–222. doi:10.1042/etls20170166

Chlorate brines on Mars: Implications for the occurrence of liquid water and deliquescence

Toner, J. D., & Catling, D. C. (2018). Chlorate brines on Mars: Implications for the occurrence of liquid water and deliquescence. Earth and Planetary Science Letters, 497, 161–168. doi:10.1016/j.epsl.2018.06.011

August 2018Biological effects on uranium isotope fractionation (238U/235U) in primary biogenic carbonates

Chen, X., Romaniello, S. J., Herrmann, A. D., Samankassou, E., & Anbar, A. D. (2018). Biological effects on uranium isotope fractionation (238U/235U) in primary biogenic carbonates. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2018.08.028

The 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

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