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 2018Explicit cloud representation in the Atmos 1D climate model for Earth and rocky planet applications

Fauchez, T., , ., Arney, G., Kumar Kopparapu, R., Domagal Goldman, S., , ., … , . (2018). Explicit cloud representation in the <i>Atmos</i> 1D climate model for Earth and rocky planet applications. AIMS Geosciences, 4(4), 180–191. doi:10.3934/geosci.2018.4.180

The Disk Substructures at High Angular Resolution Project (DSHARP). IX. A High-definition Study of the HD 163296 Planet-forming Disk

Isella, A., Huang, J., Andrews, S. M., Dullemond, C. P., Birnstiel, T., Zhang, S., … Wilner, D. J. (2018). The Disk Substructures at High Angular Resolution Project (DSHARP). IX. A High-definition Study of the HD 163296 Planet-forming Disk. The Astrophysical Journal Letters, 869(2), L49. doi:10.3847/2041-8213/aaf747

October 2018The diversity of tectonic modes and thoughts about transitions between them

Lenardic, A. (2018). The diversity of tectonic modes and thoughts about transitions between them. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 376(2132), 20170416. doi:10.1098/rsta.2017.0416

Core-mantle fractionation of carbon in Earth and Mars: The effects of sulfur

Tsuno, K., Grewal, D. S., & Dasgupta, R. (2018). Core-mantle fractionation of carbon in Earth and Mars: The effects of sulfur. Geochimica et Cosmochimica Acta, 238, 477–495. doi:10.1016/j.gca.2018.07.010

August 2018Synonymous mutations make dramatic contributions to fitness when growth is limited by a weak-link enzyme

Kristofich, J., Morgenthaler, A. B., Kinney, W. R., Ebmeier, C. C., Snyder, D. J., Old, W. M., … Copley, S. D. (2018). Synonymous mutations make dramatic contributions to fitness when growth is limited by a weak-link enzyme. PLOS Genetics, 14(8), e1007615. doi:10.1371/journal.pgen.1007615

Relative symbiont input and the lichen symbiotic outcome

Spribille, T. (2018). Relative symbiont input and the lichen symbiotic outcome. Current Opinion in Plant Biology, 44, 57–63. doi:10.1016/j.pbi.2018.02.007

Parallel genetic adaptation across environments differing in mode of growth or resource availability

Turner, C. B., Marshall, C. W., & Cooper, V. S. (2018). Parallel genetic adaptation across environments differing in mode of growth or resource availability. Evolution Letters, 2(4), 355–367. doi:10.1002/evl3.75

July 2018On the Natural History of Flavin-Based Electron Bifurcation

Baymann, F., Schoepp-Cothenet, B., Duval, S., Guiral, M., Brugna, M., Baffert, C., … Nitschke, W. (2018). On the Natural History of Flavin-Based Electron Bifurcation. Frontiers in Microbiology, 9, None. doi:10.3389/fmicb.2018.01357

Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST/STIS

Esposito, T. M., Duchêne, G., Kalas, P., Rice, M., Choquet, É., Ren, B., … Wolff, S. (2018). Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST/STIS. The Astronomical Journal, 156(2), 47. doi:10.3847/1538-3881/aacbc9

June 2018Exoplanet Biosignatures: Observational Prospects

Fujii, Y., Angerhausen, D., Deitrick, R., Domagal-Goldman, S., Grenfell, J. L., Hori, Y., … Stevenson, K. B. (2018). Exoplanet Biosignatures: Observational Prospects. Astrobiology, 18(6), 739–778. doi:10.1089/ast.2017.1733

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