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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February 2018Surface clay formation during short-term warmer and wetter conditions on a largely cold ancient Mars

Bishop, J. L., Fairén, A. G., Michalski, J. R., Gago-Duport, L., Baker, L. L., Velbel, M. A., … Rampe, E. B. (2018). Surface clay formation during short-term warmer and wetter conditions on a largely cold ancient Mars. Nature Astronomy, 2(3), 206–213. doi:10.1038/s41550-017-0377-9

Development of a mixed seawater-hydrothermal fluid geochemical signature during alteration of volcanic rocks in the Archean (∼2.7 Ga) Abitibi Greenstone Belt, Canada

Brengman, L. A., & Fedo, C. M. (2018). Development of a mixed seawater-hydrothermal fluid geochemical signature during alteration of volcanic rocks in the Archean (∼2.7 Ga) Abitibi Greenstone Belt, Canada. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2018.02.019

The Habitability of Proxima Centauri b: Environmental States and Observational Discriminants

Meadows, V. S., Arney, G. N., Schwieterman, E. W., Lustig-Yaeger, J., Lincowski, A. P., Robinson, T., … Crisp, D. (2018). The Habitability of Proxima Centauri b: Environmental States and Observational Discriminants. Astrobiology, 18(2), 133–189. doi:10.1089/ast.2016.1589

Subcritical water extraction of amino acids from Mars analog soils

Noell, A. C., Fisher, A. M., Fors-Francis, K., & Sherrit, S. (2018). Subcritical water extraction of amino acids from Mars analog soils. ELECTROPHORESIS. doi:10.1002/elps.201700459

January 2018Vital Signs: Seismology of Icy Ocean Worlds

Vance, S. D., Kedar, S., Panning, M. P., Stähler, S. C., Bills, B. G., Lorenz, R. D., … Rhoden, A. R. (2018). Vital Signs: Seismology of Icy Ocean Worlds. Astrobiology, 18(1), 37–53. doi:10.1089/ast.2016.1612

De novo origins of multicellularity in response to predation

Herron, M. D., Borin, J. M., Boswell, J. C., Walker, J., Chen, I-C., Knox, C. A., … Ratcliff, W. C. (2018). De novo origins of multicellularity in response to predation. None. doi:10.1101/247361

Disequilibrium biosignatures over Earth history and implications for detecting exoplanet life

Krissansen-Totton, J., Olson, S., & Catling, D. C. (2018). Disequilibrium biosignatures over Earth history and implications for detecting exoplanet life. Science Advances, 4(1), eaao5747. doi:10.1126/sciadv.aao5747

Metagenomic investigation of vestimentiferan tubeworm endosymbionts from Mid-Cayman Rise reveals new insights into metabolism and diversity

Reveillaud, J., Anderson, R., Reves-Sohn, S., Cavanaugh, C., & Huber, J. A. (2018). Metagenomic investigation of vestimentiferan tubeworm endosymbionts from Mid-Cayman Rise reveals new insights into metabolism and diversity. Microbiome, 6(1), None. doi:10.1186/s40168-018-0411-x

1I/‘Oumuamua as a Tidal Disruption Fragment from a Binary Star System

Ćuk, M. (2018). 1I/‘Oumuamua as a Tidal Disruption Fragment from a Binary Star System. The Astrophysical Journal, 852(1), L15. doi:10.3847/2041-8213/aaa3db

Neoproterozoic marine carbonates and their paleoceanographic significance

Hood, A. v. S., & Wallace, M. W. (2018). Neoproterozoic marine carbonates and their paleoceanographic significance. Global and Planetary Change, 160, 28–45. doi:10.1016/j.gloplacha.2017.11.006

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