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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April 2018Magnetic Fields Recorded by Chondrules Formed in Nebular Shocks

Mai, C., Desch, S. J., Boley, A. C., & Weiss, B. P. (2018). Magnetic Fields Recorded by Chondrules Formed in Nebular Shocks. The Astrophysical Journal, 857(2), 96. doi:10.3847/1538-4357/aab711

The Photochemistry of Unprotected DNA and DNA inside Bacillus subtilis Spores Exposed to Simulated Martian Surface Conditions of Atmospheric Composition, Temperature, Pressure, and Solar Radiation

Nicholson, W. L., Schuerger, A. C., & Douki, T. (2018). The Photochemistry of Unprotected DNA and DNA inside Bacillus subtilis Spores Exposed to Simulated Martian Surface Conditions of Atmospheric Composition, Temperature, Pressure, and Solar Radiation. Astrobiology, 18(4), 393–402. doi:10.1089/ast.2017.1721

Discovery of a hypersaline subglacial lake complex beneath Devon Ice Cap, Canadian Arctic

Rutishauser, A., Blankenship, D. D., Sharp, M., Skidmore, M. L., Greenbaum, J. S., Grima, C., … Young, D. A. (2018). Discovery of a hypersaline subglacial lake complex beneath Devon Ice Cap, Canadian Arctic. Science Advances, 4(4), None. doi:10.1126/sciadv.aar4353

Rapid effects of terrestrial alteration on highly siderophile elements in the Sutter's Mill meteorite

Walker, R. J., Yin, Q-Z., & Heck, P. R. (2018). Rapid effects of terrestrial alteration on highly siderophile elements in the Sutter's Mill meteorite. Meteoritics & Planetary Science. doi:10.1111/maps.13102

Constraining the climate and ocean pH of the early Earth with a geological carbon cycle model

Krissansen-Totton, J., Arney, G. N., & Catling, D. C. (2018). Constraining the climate and ocean pH of the early Earth with a geological carbon cycle model. Proceedings of the National Academy of Sciences, None, 201721296. doi:10.1073/pnas.1721296115

Extraction of amino acids using supercritical carbon dioxide for in situ astrobiological applications

Menlyadiev, M., Henderson, B. L., Zhong, F., Lin, Y., & Kanik, I. (2018). Extraction of amino acids using supercritical carbon dioxide for in situ astrobiological applications. International Journal of Astrobiology, None, 1–10. doi:10.1017/s147355041800006x

New Circumstellar Sources of PO and PN: The Increasing Role of Phosphorus Chemistry in Oxygen-rich Stars

Ziurys, L. M., Schmidt, D. R., & Bernal, J. J. (2018). New Circumstellar Sources of PO and PN: The Increasing Role of Phosphorus Chemistry in Oxygen-rich Stars. The Astrophysical Journal, 856(2), 169. doi:10.3847/1538-4357/aaafc6

The opposite effect of K + and Na + on the hydrolysis of linear and cyclic dipeptides

Campbell, T. D., Hart, C. A., Febrian, R., Cheneler, M. L., & Bracher, P. J. (2018). The opposite effect of K + and Na + on the hydrolysis of linear and cyclic dipeptides. Tetrahedron Letters. doi:10.1016/j.tetlet.2018.04.073

An introductory study using impedance spectroscopy technique with polarizable microelectrode for amino acids characterization

Chin, K. B., Chi, I., Pasalic, J., Huang, C-K., & Barge, L. M. (2018). An introductory study using impedance spectroscopy technique with polarizable microelectrode for amino acids characterization. Review of Scientific Instruments, 89(4), 045108. doi:10.1063/1.5020076

High mutation rates limit evolutionary adaptation in Escherichia coli

Sprouffske, K., Aguilar-Rodríguez, J., Sniegowski, P., & Wagner, A. (2018). High mutation rates limit evolutionary adaptation in Escherichia coli. PLOS Genetics, 14(4), e1007324. doi:10.1371/journal.pgen.1007324

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