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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November 2023Scaling K2. VII. Evidence For a High Occurrence Rate of Hot Sub-Neptunes at Intermediate Ages

Christiansen, J. L., Zink, J. K., Hardegree-Ullman, K. K., Fernandes, R. B., Hopkins, P. F., Rebull, L. M., … Bhure, S. (2023). Scaling K2. VII. Evidence For a High Occurrence Rate of Hot Sub-Neptunes at Intermediate Ages. The Astronomical Journal, 166(6), 248. doi:10.3847/1538-3881/acf9f9

Nitrogen isotopes reveal independent origins of N2-fixing symbiosis in extant cycad lineages

Kipp, M. A., Stüeken, E. E., Strömberg, C. A. E., Brightly, W. H., Arbour, V. M., Erdei, B., … Buick, R. (2023). Nitrogen isotopes reveal independent origins of N2-fixing symbiosis in extant cycad lineages. Nature Ecology & Evolution. doi:10.1038/s41559-023-02251-1

Phosphorus-bearing molecules PO and PN at the edge of the Galaxy

Koelemay, L. A., Gold, K. R., & Ziurys, L. M. (2023). Phosphorus-bearing molecules PO and PN at the edge of the Galaxy. Nature, 623(7986), 292–295. doi:10.1038/s41586-023-06616-1

Exploring Climate with Obliquity in a Variable-eccentricity Earth-like World

Way, M. J., Georgakarakos, N., & Clune, T. L. (2023). Exploring Climate with Obliquity in a Variable-eccentricity Earth-like World. The Astronomical Journal, 166(6), 227. doi:10.3847/1538-3881/ad0373

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Aucamp, T., Howarth, G. H., Peel, C. J., Costin, G., Day, J. M. D., le Roux, P., Scott, J. M., Greshake, A., & Bartoschewitz, R. (2023). Petrogenesis of the Dar al Gani (DaG) 1.1 Ma ejection-paired olivine-phyric shergottites and implications for ~470 Ma Martian volcanism. Meteoritics and Planetary Science, 58(11), 1654-1676. doi:10.1111/maps.14090

October 2023The potassium isotopic composition of CI chondrites and the origin of isotopic variations among primitive planetary bodies

Koefoed, P., Barrat, J-A., Pravdivtseva, O., Alexander, C. M. O. D., Lodders, K., Ogliore, R., & Wang, K. (2023). The potassium isotopic composition of CI chondrites and the origin of isotopic variations among primitive planetary bodies. Geochimica et Cosmochimica Acta, 358, 49–60. doi:10.1016/j.gca.2023.07.025

The H content of aubrites: An evaluation of bulk versus in situ methods for quantifying water in meteorites

Peterson, L. D., Newcombe, M. E., Alexander, C. M. O. D., Wang, J., Klein, F., Bekaert, D. V., & Nielsen, S. G. (2023). The H content of aubrites: An evaluation of bulk versus in situ methods for quantifying water in meteorites. Earth and Planetary Science Letters, 620, 118341. doi:10.1016/j.epsl.2023.118341

Chronology of alkali anorthosite 14304 clast “b” records basin forming impact at ∼3.95 Ga

Kruijer, T. S., Borg, L. E., Cassata, W. S., Wimpenny, J., Brennecka, G. A., Shearer, C. K., & Simon, S. B. (2023). Chronology of alkali anorthosite 14304 clast “b” records basin forming impact at ∼3.95 Ga. Geochimica et Cosmochimica Acta, 358, 61–76. doi:10.1016/j.gca.2023.07.026

Organosulfur Aerosols Likely Carried Sulfur MIF Signatures in the Early Earth’s Atmosphere

Oduro, H., Ono, S., Alrasheed, F., & Eldridge, D. L. (2023). Organosulfur Aerosols Likely Carried Sulfur MIF Signatures in the Early Earth’s Atmosphere. Geochemistry, Geophysics, Geosystems, 24(10), None. doi:10.1029/2022gc010777

Cyanide Abundance and Soluble Organic Composition in Highly Aqueously Altered CM Chondrites

Reichow, R. A., Schwartz, P. K., Smith, K. E., & Callahan, M. P. (2023). Cyanide Abundance and Soluble Organic Composition in Highly Aqueously Altered CM Chondrites. ACS Earth and Space Chemistry. doi:10.1021/acsearthspacechem.3c00229

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