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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November 2017Morphological signatures of microbial activity across sediment and light microenvironments of Lake Vanda, Antarctica

Mackey, T. J., Sumner, D. Y., Hawes, I., & Jungblut, A. D. (2017). Morphological signatures of microbial activity across sediment and light microenvironments of Lake Vanda, Antarctica. Sedimentary Geology, 361, 82–92. doi:10.1016/j.sedgeo.2017.09.013

The late-stage “ferruginization” of the Ediacara Member (Rawnsley Quartzite, South Australia): Insights from uranium isotopes

Tarhan, L. G., Planavsky, N. J., Wang, X., Bellefroid, E. J., Droser, M. L., & Gehling, J. G. (2017). The late-stage “ferruginization” of the Ediacara Member (Rawnsley Quartzite, South Australia): Insights from uranium isotopes. Geobiology. doi:10.1111/gbi.12262

Stable carbon isotopes of sedimentary kerogens and carbonaceous macrofossils from the Ediacaran Miaohe Member in South China: Implications for stratigraphic correlation and sources of sedimentary organic carbon

Xiao, S., Bykova, N., Kovalick, A., & Gill, B. C. (2017). Stable carbon isotopes of sedimentary kerogens and carbonaceous macrofossils from the Ediacaran Miaohe Member in South China: Implications for stratigraphic correlation and sources of sedimentary organic carbon. Precambrian Research, 302, 171–179. doi:10.1016/j.precamres.2017.10.006

Preliminary analysis of newly recovered Apollo 17 seismic data

Dimech, J-L., Knapmeyer-Endrun, B., Phillips, D., & Weber, R. C. (2017). Preliminary analysis of newly recovered Apollo 17 seismic data. Results in Physics, 7, 4457–4458. doi:10.1016/j.rinp.2017.11.029

Elongation of Model Prebiotic Proto-Peptides by Continuous Monomer Feeding

Yu, S-S., Solano, M. D., Blanchard, M. K., Soper-Hopper, M. T., Krishnamurthy, R., Fernández, F. M., … Grover, M. A. (2017). Elongation of Model Prebiotic Proto-Peptides by Continuous Monomer Feeding. Macromolecules, 50(23), 9286–9294. doi:10.1021/acs.macromol.7b01569

SEARCHING FOR THE GREAT OXIDATION EVENT IN NORTH AMERICA: A REAPPRAISAL OF THE "MIF–MDF TRANSITION" IN THE HURONIAN SUPERGROUP BY SIMS SULFUR FOUR-ISOTOPE ANALYSIS

Cui, H., , ., Kitajima, K., Spicuzza, M. J., Fournelle, J. H., Ishida, A., … Valley, J. W. (2017). SEARCHING FOR THE GREAT OXIDATION EVENT IN NORTH AMERICA: A REAPPRAISAL OF THE "MIF–MDF TRANSITION" IN THE HURONIAN SUPERGROUP BY SIMS SULFUR FOUR-ISOTOPE ANALYSIS. None. doi:10.1130/abs/2017am-300054

Differential metamorphic effects on nitrogen isotopes in kerogen extracts and bulk rocks

Stüeken, E. E., Zaloumis, J., Meixnerová, J., & Buick, R. (2017). Differential metamorphic effects on nitrogen isotopes in kerogen extracts and bulk rocks. Geochimica et Cosmochimica Acta, 217, 80–94. doi:10.1016/j.gca.2017.08.019

Atmospheric Beacons of Life from Exoplanets Around G and K Stars

Airapetian, V. S., Jackman, C. H., Mlynczak, M., Danchi, W., & Hunt, L. (2017). Atmospheric Beacons of Life from Exoplanets Around G and K Stars. Scientific Reports, 7(1), None. doi:10.1038/s41598-017-14192-4

Functional horizontal gene transfer from bacteria to eukaryotes

Husnik, F., & McCutcheon, J. P. (2017). Functional horizontal gene transfer from bacteria to eukaryotes. Nature Reviews Microbiology, 16(2), 67–79. doi:10.1038/nrmicro.2017.137

October 2017Exclusion of Stellar Companions to Exoplanet Host Stars

Wittrock, J. M., Kane, S. R., Horch, E. P., Howell, S. B., Ciardi, D. R., & Everett, M. E. (2017). Exclusion of Stellar Companions to Exoplanet Host Stars. The Astronomical Journal, 154(5), 184. doi:10.3847/1538-3881/aa8d69

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