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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January 2022Reexamination of 2.5-Ga “whiff” of oxygen interval points to anoxic ocean before GOE

Slotznick, S. P., Johnson, J. E., Rasmussen, B., Raub, T. D., Webb, S. M., Zi, J-W., … Fischer, W. W. (2022). Reexamination of 2.5-Ga “whiff” of oxygen interval points to anoxic ocean before GOE. Science Advances, 8(1), None. doi:10.1126/sciadv.abj7190

Depleted carbon isotope compositions observed at Gale crater, Mars

House, C. H., Wong, G. M., Webster, C. R., Flesch, G. J., Franz, H. B., Stern, J. C., … Mahaffy, P. R. (2022). Depleted carbon isotope compositions observed at Gale crater, Mars. Proceedings of the National Academy of Sciences, 119(4), None. doi:10.1073/pnas.2115651119

Across-arc variations in K-isotope ratios in lavas of the Izu arc: Evidence for progressive depletion of the slab in K and similarly mobile elements

Parendo, C. A., Jacobsen, S. B., Kimura, J-I., & Taylor, R. N. (2022). Across-arc variations in K-isotope ratios in lavas of the Izu arc: Evidence for progressive depletion of the slab in K and similarly mobile elements. Earth and Planetary Science Letters, 578, 117291. doi:10.1016/j.epsl.2021.117291

Organic synthesis associated with serpentinization and carbonation on early Mars

Steele, A., Benning, L. G., Wirth, R., Schreiber, A., Araki, T., McCubbin, F. M., … Rogers, K. (2022). Organic synthesis associated with serpentinization and carbonation on early Mars. Science, 375(6577), 172–177. doi:10.1126/science.abg7905

December 2021Nonstandard RNA/RNA interactions likely enhance folding and stability of segmented ribosomes

Rivas, M., & Fox, G. E. (2021). Nonstandard RNA/RNA interactions likely enhance folding and stability of segmented ribosomes. RNA, 28(3), 340–352. doi:10.1261/rna.079006.121

Evaluation of the classification of pre-solar silicon carbide grains using consensus clustering with resampling methods: An assessment of the confidence of grain assignments

Hystad, G., Boujibar, A., Liu, N., Nittler, L. R., & Hazen, R. M. (2021). Evaluation of the classification of pre-solar silicon carbide grains using consensus clustering with resampling methods: An assessment of the confidence of grain assignments. Monthly Notices of the Royal Astronomical Society, 510(1), 334–350. doi:10.1093/mnras/stab3478

Planetesimal rings as the cause of the Solar System’s planetary architecture

Izidoro, A., Dasgupta, R., Raymond, S. N., Deienno, R., Bitsch, B., & Isella, A. (2021). Planetesimal rings as the cause of the Solar System’s planetary architecture. Nature Astronomy, 6(3), 357–366. doi:10.1038/s41550-021-01557-z

New Evidence for Wet Accretion of Inner Solar System Planetesimals from Meteorites Chelyabinsk and Benenitra

Jin, Z., Bose, M., Lichtenberg, T., & Mulders, G. D. (2021). New Evidence for Wet Accretion of Inner Solar System Planetesimals from Meteorites Chelyabinsk and Benenitra. The Planetary Science Journal, 2(6), 244. doi:10.3847/psj/ac3d86

Effect of nickel on the high-pressure phases in FeH

Piet, H., Chizmeshya, A. V. G., Chen, B., Chariton, S., Greenberg, E., Prakapenka, V. B., & Shim, S-H. (2021). Effect of nickel on the high-pressure phases in FeH. Physical Review B, 104(22), None. doi:10.1103/physrevb.104.224106

Net Charges of the Ribosomal Proteins of the S10 and spc Clusters of Halophiles Are Inversely Related to the Degree of Halotolerance

Tirumalai, M. R., Anane-Bediakoh, D., Rajesh, S., & Fox, G. E. (2021). Net Charges of the Ribosomal Proteins of the <i>S10</i> and <i>spc</i> Clusters of Halophiles Are Inversely Related to the Degree of Halotolerance. Microbiology Spectrum, 9(3), None. doi:10.1128/spectrum.01782-21

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