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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December 2017Complexity in pH-Dependent Ribozyme Kinetics: Dark pKa Shifts and Wavy Rate–pH Profiles

Frankel, E. A., & Bevilacqua, P. C. (2017). Complexity in pH-Dependent Ribozyme Kinetics: Dark pKa Shifts and Wavy Rate–pH Profiles. Biochemistry, 57(5), 483–488. doi:10.1021/acs.biochem.7b00784

Extraterrestrial formation of oldhamite and portlandite through thermal metamorphism of calcite in the Sutter's Mill carbonaceous chondrite

Haberle, C. W., & Garvie, L. A. J. (2017). Extraterrestrial formation of oldhamite and portlandite through thermal metamorphism of calcite in the Sutter's Mill carbonaceous chondrite. American Mineralogist, 102(12), 2415–2421. doi:10.2138/am-2017-6180

Photobiological Effects at Earth's Surface Following a 50 pc Supernova

Thomas, B. C. (2017). Photobiological Effects at Earth's Surface Following a 50 pc Supernova. Astrobiology. doi:10.1089/ast.2017.1730

Effects of primitive photosynthesis on Earth’s early climate system

Ozaki, K., Tajika, E., Hong, P. K., Nakagawa, Y., & Reinhard, C. T. (2017). Effects of primitive photosynthesis on Earth’s early climate system. Nature Geoscience, 11(1), 55–59. doi:10.1038/s41561-017-0031-2

Computational exploration of the chemical structure space of possible reverse tricarboxylic acid cycle constituents

Meringer, M., & James Cleaves, H. (2017). Computational exploration of the chemical structure space of possible reverse tricarboxylic acid cycle constituents. Scientific Reports, 7(1), None. doi:10.1038/s41598-017-17345-7

The Possible Emergence of Life and Differentiation of a Shallow Biosphere on Irradiated Icy Worlds: The Example of Europa

Russell, M. J., Murray, A. E., & Hand, K. P. (2017). The Possible Emergence of Life and Differentiation of a Shallow Biosphere on Irradiated Icy Worlds: The Example of Europa. Astrobiology, 17(12), 1265–1273. doi:10.1089/ast.2016.1600

The terrestrial late veneer from core disruption of a lunar-sized impactor

Genda, H., Brasser, R., & Mojzsis, S. J. (2017). The terrestrial late veneer from core disruption of a lunar-sized impactor. Earth and Planetary Science Letters, 480, 25–32. doi:10.1016/j.epsl.2017.09.041

Heterogeneous delivery of silicate and metal to the Earth by large planetesimals

Marchi, S., Canup, R. M., & Walker, R. J. (2017). Heterogeneous delivery of silicate and metal to the Earth by large planetesimals. Nature Geoscience. doi:10.1038/s41561-017-0022-3

Disk Masses for Embedded Class I Protostars in the Taurus Molecular Cloud

Sheehan, P. D., & Eisner, J. A. (2017). Disk Masses for Embedded Class I Protostars in the Taurus Molecular Cloud. The Astrophysical Journal, 851(1), 45. doi:10.3847/1538-4357/aa9990

Atmospheric Biosignatures

Grenfell, J. L. (2017). Atmospheric Biosignatures. Handbook of Exoplanets, None, 1–14. doi:10.1007/978-3-319-30648-3_68-1

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