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 2024Climate Regimes across the Habitable Zone: A Comparison of Synchronous Rocky M and K Dwarf Planets

Lobo, A. H., & Shields, A. L. (2024). Climate Regimes across the Habitable Zone: A Comparison of Synchronous Rocky M and K Dwarf Planets. The Astrophysical Journal, 972(1), 71. doi:10.3847/1538-4357/ad58bb

Copper isotope fractionation during asteroid core solidification

Ni, P., Zhan, Y., Chabot, N. L., Ryan, C. J., Zhu, K., Nie, N. X., … Shahar, A. (2024). Copper isotope fractionation during asteroid core solidification. Geochemical Perspectives Letters, 31, 49–53. doi:10.7185/geochemlet.2432

Late Pebble Accretion of Comet 81P/Wild 2 Nucleus: Evidence from a Plagioclase-bearing Chondrule Fragment, Pyxie

Zhang, M., Zolensky, M. E., Fukuda, K., Nakashima, D., Weisberg, M. K., & Kita, N. T. (2024). Late Pebble Accretion of Comet 81P/Wild 2 Nucleus: Evidence from a Plagioclase-bearing Chondrule Fragment, Pyxie. The Astrophysical Journal, 971(1), 12. doi:10.3847/1538-4357/ad55cc

Toward mending the marine mass balance model for nickel: Experimentally determined isotope fractionation during Ni sorption to birnessite

Wasylenki, L. E., Wells, R. M., Spivak-Birndorf, L. J., Baransky, E. J., & Frierdich, A. J. (2024). Toward mending the marine mass balance model for nickel: Experimentally determined isotope fractionation during Ni sorption to birnessite. Geochimica et Cosmochimica Acta, 379, 76–88. doi:10.1016/j.gca.2024.06.022

July 2024High-precision U-Pb zircon dating identifies a major magmatic event on the Moon at 4.338 Ga

Barboni, M., Szymanowski, D., Schoene, B., Dauphas, N., Zhang, Z. J., Chen, X., & McKeegan, K. D. (2024). High-precision U-Pb zircon dating identifies a major magmatic event on the Moon at 4.338 Ga. Science Advances, 10(30), None. doi:10.1126/sciadv.adn9871

And now for something completely random: spatial distribution of Dickinsonia on the Ediacaran seafloor

Boan, P. C., Evans, S. D., & Droser, M. L. (2024). And now for something completely random: spatial distribution of Dickinsonia on the Ediacaran seafloor. Global and Planetary Change, 238, 104467. doi:10.1016/j.gloplacha.2024.104467

Morphometric investigation of Tribrachidium from Nilpena Ediacara National Park, South Australia

Botha, T., Droser, M., GarcíA-Bellido, D., & Sherratt, E. (2024). Morphometric investigation of Tribrachidium from Nilpena Ediacara National Park, South Australia. Palaeontologia Electronica. doi:10.26879/1374

Radiolytic Effects on Biological and Abiotic Amino Acids in Shallow Subsurface Ices on Europa and Enceladus

Pavlov, A. A., McLain, H., Glavin, D. P., Elsila, J. E., Dworkin, J., House, C. H., & Zhang, Z. (2024). Radiolytic Effects on Biological and Abiotic Amino Acids in Shallow Subsurface Ices on Europa and Enceladus. Astrobiology, 24(7), 698–709. doi:10.1089/ast.2023.0120

Copper and zinc isotope compositions of pristine eucrites as analogues for differentiated planetary feedstocks

Dhaliwal, J. K., Day, J. M. D., Creech, J. B., & Moynier, F. (2024). Copper and zinc isotope compositions of pristine eucrites as analogues for differentiated planetary feedstocks. Earth and Planetary Science Letters, 637, 118740. doi:10.1016/j.epsl.2024.118740

Reply to “Comment on “Biostratinomy of the enigmatic tubular organism Aulozoon soliorum, the Rawnsley Quartzite, South Australia” by Surprenant et al. (2023)”

Surprenant, R. L., Gehling, J. G., Hughes, E. B., & Droser, M. L. (2024). Reply to “Comment on “Biostratinomy of the enigmatic tubular organism Aulozoon soliorum, the Rawnsley Quartzite, South Australia” by Surprenant et al. (2023)”. Gondwana Research, 131, 69–74. doi:10.1016/j.gr.2024.02.010

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