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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May 2020Impact of Hydrogen Sulfide on Photochemical Haze Formation in Methane/Nitrogen Atmospheres

Reed, N. W., Browne, E. C., & Tolbert, M. A. (2020). Impact of Hydrogen Sulfide on Photochemical Haze Formation in Methane/Nitrogen Atmospheres. ACS Earth and Space Chemistry, 4(6), 897–904. doi:10.1021/acsearthspacechem.0c00086

April 2020Evolution of new enzymes by gene duplication and divergence

Copley, S. D. (2020). Evolution of new enzymes by gene duplication and divergence. The FEBS Journal, 287(7), 1262–1283. doi:10.1111/febs.15299

The Solidus and Melt Productivity of Nominally Anhydrous Martian Mantle Constrained by New High Pressure‐Temperature Experiments—Implications for Crustal Production and Mantle Source Evolution

Ding, S., Dasgupta, R., & Tsuno, K. (2020). The Solidus and Melt Productivity of Nominally Anhydrous Martian Mantle Constrained by New High Pressure‐Temperature Experiments—Implications for Crustal Production and Mantle Source Evolution. Journal of Geophysical Research: Planets, 125(4), None. doi:10.1029/2019je006078

Uncertainty Quantification in Planetary Thermal History Models: Implications for Hypotheses Discrimination and Habitability Modeling

Seales, J., & Lenardic, A. (2020). Uncertainty Quantification in Planetary Thermal History Models: Implications for Hypotheses Discrimination and Habitability Modeling. The Astrophysical Journal, 893(2), 114. doi:10.3847/1538-4357/ab822b

March 2020Short-Term Stable Isotope Probing of Proteins Reveals Taxa Incorporating Inorganic Carbon in a Hot Spring Microbial Mat

Steinke, L., Slysz, G. W., Lipton, M. S., Klatt, C., Moran, J. J., Romine, M. F., … Ward, D. M. (2020). Short-Term Stable Isotope Probing of Proteins Reveals Taxa Incorporating Inorganic Carbon in a Hot Spring Microbial Mat. Applied and Environmental Microbiology, 86(7), None. doi:10.1128/aem.01829-19

January 2020Serpentinite and the search for life beyond Earth

Vance, S. D., & Melwani Daswani, M. (2020). Serpentinite and the search for life beyond Earth. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378(2165), 20180421. doi:10.1098/rsta.2018.0421

The Energy Budgets of Giant Impacts

Carter, P. J., Lock, S. J., & Stewart, S. T. (2020). The Energy Budgets of Giant Impacts. Journal of Geophysical Research: Planets, 125(1), None. doi:10.1029/2019je006042

December 2019Great Oxidation and Lomagundi events linked by deep cycling and enhanced degassing of carbon

Eguchi, J., Seales, J., & Dasgupta, R. (2019). Great Oxidation and Lomagundi events linked by deep cycling and enhanced degassing of carbon. Nature Geoscience, 13(1), 71–76. doi:10.1038/s41561-019-0492-6

Mutations that improve efficiency of a weak-link enzyme are rare compared to adaptive mutations elsewhere in the genome

Morgenthaler, A. B., Kinney, W. R., Ebmeier, C. C., Walsh, C. M., Snyder, D. J., Cooper, V. S., … Copley, S. D. (2019). Mutations that improve efficiency of a weak-link enzyme are rare compared to adaptive mutations elsewhere in the genome. eLife, 8, None. doi:10.7554/elife.53535

Negative frequency‐dependent selection maintains coexisting genotypes during fluctuating selection

Turner, C. B., Buskirk, S. W., Harris, K. B., & Cooper, V. S. (2019). Negative frequency‐dependent selection maintains coexisting genotypes during fluctuating selection. Molecular Ecology, 29(1), 138–148. doi:10.1111/mec.15307

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