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 2019Genome Sequence of Mariprofundus sp. Strain EBB-1, a Novel Marine Autotroph Isolated from an Iron-Sulfur Mineral

Lopez, A., Albino, D., Beraki, S., Broomell, S., Canela, R., Dingmon, T., … Amend, J. P. (2019). Genome Sequence of Mariprofundus sp. Strain EBB-1, a Novel Marine Autotroph Isolated from an Iron-Sulfur Mineral. Microbiology Resource Announcements, 8(39), None. doi:10.1128/mra.00995-19

August 2019Aspartic acid racemization constrains long-term viability and longevity of endospores

Liang, R., Lau, M., Baars, O., Robb, F. T., & Onstott, T. C. (2019). Aspartic acid racemization constrains long-term viability and longevity of endospores. FEMS Microbiology Ecology. doi:10.1093/femsec/fiz132

Prebiotic amino acids bind to and stabilize prebiotic fatty acid membranes

Cornell, C. E., Black, R. A., Xue, M., Litz, H. E., Ramsay, A., Gordon, M., … Keller, S. L. (2019). Prebiotic amino acids bind to and stabilize prebiotic fatty acid membranes. Proceedings of the National Academy of Sciences, 116(35), 17239–17244. doi:10.1073/pnas.1900275116

Evolutionary Relationships Between Low Potential Ferredoxin and Flavodoxin Electron Carriers

Campbell, I. J., Bennett, G. N., & Silberg, J. J. (2019). Evolutionary Relationships Between Low Potential Ferredoxin and Flavodoxin Electron Carriers. Frontiers in Energy Research, 7, None. doi:10.3389/fenrg.2019.00079

How to resurrect ancestral proteins as proxies for ancient biogeochemistry

Garcia, A. K., & Kaçar, B. (2019). How to resurrect ancestral proteins as proxies for ancient biogeochemistry. Free Radical Biology and Medicine, 140, 260–269. doi:10.1016/j.freeradbiomed.2019.03.033

Rapid classification of TESS planet candidates with convolutional neural networks

Osborn, H. P., Ansdell, M., Ioannou, Y., Sasdelli, M., Angerhausen, D., Caldwell, D., … Smith, J. C. (2019). Rapid classification of TESS planet candidates with convolutional neural networks. Astronomy & Astrophysics. doi:10.1051/0004-6361/201935345

TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Motivations and protocol

Fauchez, T., Turbet, M., Wolf, E. T., Boutle, I., Way, M. J., Del Genio, A. D., … Domagal Goldman, S. D. (2019). TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Motivations and protocol. None. doi:10.5194/gmd-2019-166

Mineralogy, petrography, and oxygen and aluminum-magnesium isotope systematics of grossite-bearing refractory inclusions

Krot, A. N., Nagashima, K., Simon, S. B., Ma, C., Connolly, H. C., Huss, G. R., … Bizzarro, M. (2019). Mineralogy, petrography, and oxygen and aluminum-magnesium isotope systematics of grossite-bearing refractory inclusions. Geochemistry, None, 125529. doi:10.1016/j.chemer.2019.08.001

Thermal Infrared Imaging of MWC 758 with the Large Binocular Telescope: Planetary-driven Spiral Arms?

Wagner, K., Stone, J. M., Spalding, E., Apai, D., Dong, R., Ertel, S., … Webster, R. (2019). Thermal Infrared Imaging of MWC 758 with the Large Binocular Telescope: Planetary-driven Spiral Arms? The Astrophysical Journal, 882(1), 20. doi:10.3847/1538-4357/ab32ea

In situ Ion Irradiation and Heating Experiments in the Transmission Electron Microscope: Simulations of Dust Processing in Circumstellar Environments

Haenecour, P., Thompson, M. S., Zega, T. J., Howe, J. Y., & Chen, W-Y. (2019). In situ Ion Irradiation and Heating Experiments in the Transmission Electron Microscope: Simulations of Dust Processing in Circumstellar Environments. Microscopy and Microanalysis, 25(S2), 2454–2455. doi:10.1017/s143192761901300x

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