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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August 2018Chiral molecules in space and their possible passage to planetary bodies recorded by meteorites

Pizzarello, S., & Yarnes, C. T. (2018). Chiral molecules in space and their possible passage to planetary bodies recorded by meteorites. Earth and Planetary Science Letters, 496, 198–205. doi:10.1016/j.epsl.2018.05.026

Silica-rich volcanism in the early solar system dated at 4.565 Ga

Srinivasan, P., Dunlap, D. R., Agee, C. B., Wadhwa, M., Coleff, D., Ziegler, K., … McCubbin, F. M. (2018). Silica-rich volcanism in the early solar system dated at 4.565 Ga. Nature Communications, 9(1), None. doi:10.1038/s41467-018-05501-0

Monosaccharides and Their Derivatives in Carbonaceous Meteorites: A Scenario for Their Synthesis and Onset of Enantiomeric Excesses

Cooper, G., Rios, A., & Nuevo, M. (2018). Monosaccharides and Their Derivatives in Carbonaceous Meteorites: A Scenario for Their Synthesis and Onset of Enantiomeric Excesses. Life, 8(3), 36. doi:10.3390/life8030036

Habitability of Exoplanet Waterworlds

Kite, E. S., & Ford, E. B. (2018). Habitability of Exoplanet Waterworlds. The Astrophysical Journal, 864(1), 75. doi:10.3847/1538-4357/aad6e0

Magellan Adaptive Optics Imaging of PDS 70: Measuring the Mass Accretion Rate of a Young Giant Planet within a Gapped Disk

Wagner, K., Follete, K. B., Close, L. M., Apai, D., Gibbs, A., Keppler, M., … McClure, M. (2018). Magellan Adaptive Optics Imaging of PDS 70: Measuring the Mass Accretion Rate of a Young Giant Planet within a Gapped Disk. The Astrophysical Journal, 863(1), L8. doi:10.3847/2041-8213/aad695

Synonymous 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 2018Chondritic late accretion to Mars and the nature of shergottite reservoirs

Tait, K. T., & Day, J. M. D. (2018). Chondritic late accretion to Mars and the nature of shergottite reservoirs. Earth and Planetary Science Letters, 494, 99–108. doi:10.1016/j.epsl.2018.04.040

On 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

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