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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July 2017Geochemical bioenergetics during low-temperature serpentinization: An example from the Samail ophiolite, Sultanate of Oman

Canovas, P. A., Hoehler, T., & Shock, E. L. (2017). Geochemical bioenergetics during low-temperature serpentinization: An example from the Samail ophiolite, Sultanate of Oman. Journal of Geophysical Research: Biogeosciences, 122(7), 1821–1847. doi:10.1002/2017jg003825

Novel Pelagic Iron-Oxidizing Zetaproteobacteria from the Chesapeake Bay Oxic–Anoxic Transition Zone

Chiu, B. K., Kato, S., McAllister, S. M., Field, E. K., & Chan, C. S. (2017). Novel Pelagic Iron-Oxidizing Zetaproteobacteria from the Chesapeake Bay Oxic–Anoxic Transition Zone. Frontiers in Microbiology, 8, None. doi:10.3389/fmicb.2017.01280

Visualizing Iron Oxidation State in a Possible Cometary Clast from Carbonaceous Meteorite LAP 02342

De Gregorio, B., & Stroud, R. (2017). Visualizing Iron Oxidation State in a Possible Cometary Clast from Carbonaceous Meteorite LAP 02342. Microscopy and Microanalysis, 23(S1), 2150–2151. doi:10.1017/s1431927617011412

Early metal-silicate differentiation during planetesimal formation revealed by acapulcoite and lodranite meteorites

Dhaliwal, J. K., Day, J. M. D., Corder, C. A., Tait, K. T., Marti, K., Assayag, N., … Taylor, L. A. (2017). Early metal-silicate differentiation during planetesimal formation revealed by acapulcoite and lodranite meteorites. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2017.06.042

Nitrogenous Derivatives of Phosphorus and the Origins of Life: Plausible Prebiotic Phosphorylating Agents in Water

Karki, M., Gibard, C., Bhowmik, S., & Krishnamurthy, R. (2017). Nitrogenous Derivatives of Phosphorus and the Origins of Life: Plausible Prebiotic Phosphorylating Agents in Water. Life, 7(3), 32. doi:10.3390/life7030032

Hydrogen isotope composition of Thermoanaerobacterium saccharolyticum lipids: comparing wild type to a nfn- transhydrogenase mutant

Leavitt, W. D., Jean-Loup Murphy, S., Lynd, L. R., & Bradley, A. S. (2017). Hydrogen isotope composition of Thermoanaerobacterium saccharolyticum lipids: comparing wild type to a nfn- transhydrogenase mutant. Organic Geochemistry. doi:10.1016/j.orggeochem.2017.06.020

Characterization of a cold-active bacterium isolated from the South Pole “Ice Tunnel”

Madigan, M. T., Kempher, M. L., Bender, K. S., Sullivan, P., Matthew Sattley, W., Dohnalkova, A. C., & Joye, S. B. (2017). Characterization of a cold-active bacterium isolated from the South Pole “Ice Tunnel”. Extremophiles, 21(5), 891–901. doi:10.1007/s00792-017-0950-2

Characterization of a cold-adapted DNA photolyase from C. psychrerythraea 34H

Munshi, S., Rajamoorthi, A., & Stanley, R. J. (2017). Characterization of a cold-adapted DNA photolyase from C. psychrerythraea 34H. Extremophiles, 21(5), 919–932. doi:10.1007/s00792-017-0953-z

Autotrophic microbial arsenotrophy in arsenic-rich soda lakes

Oremland, R. S., Saltikov, C. W., Stolz, J. F., & Hollibaugh, J. T. (2017). Autotrophic microbial arsenotrophy in arsenic-rich soda lakes. FEMS Microbiology Letters, 364(15), None. doi:10.1093/femsle/fnx146

The forensics of fulgurite formation

Pasek, M. A., & Pasek, V. D. (2017). The forensics of fulgurite formation. Mineralogy and Petrology. doi:10.1007/s00710-017-0527-x

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