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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July 2024Reply 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

June 2024The hydrology of the Jezero crater paleolake: Implications for the climate and limnology of the lake system from hydrological modeling

Horvath, D. G., & Andrews-Hanna, J. C. (2024). The hydrology of the Jezero crater paleolake: Implications for the climate and limnology of the lake system from hydrological modeling. Earth and Planetary Science Letters, 635, 118690. doi:10.1016/j.epsl.2024.118690

More realistic planetesimal masses alter Kuiper belt formation models and add stochasticity

Kaib, N. A., Parsells, A., Grimm, S., Quarles, B., & Clement, M. S. (2024). More realistic planetesimal masses alter Kuiper belt formation models and add stochasticity. Icarus, 415, 116057. doi:10.1016/j.icarus.2024.116057

May 2024Thermodynamic property estimations for aqueous primary, secondary, and tertiary alkylamines, benzylamines, and their corresponding aminiums across temperature and pressure are validated by measurements from experiments

Robinson, K. J., Seewald, J. S., Sylva, S. P., Fecteau, K. M., & Shock, E. L. (2024). Thermodynamic property estimations for aqueous primary, secondary, and tertiary alkylamines, benzylamines, and their corresponding aminiums across temperature and pressure are validated by measurements from experiments. Geochimica et Cosmochimica Acta, 372, 62–80. doi:10.1016/j.gca.2024.03.013

Crash Chronicles: Relative contribution from comets and carbonaceous asteroids to Earth’s volatile budget in the context of an Early Instability

Joiret, S., Raymond, S. N., Avice, G., & Clement, M. S. (2024). Crash Chronicles: Relative contribution from comets and carbonaceous asteroids to Earth’s volatile budget in the context of an Early Instability. Icarus, 414, 116032. doi:10.1016/j.icarus.2024.116032

Sublimation and infrared spectral properties of ammonium cyanide

Gerakines, P. A., Yarnall, Y. Y., & Hudson, R. L. (2024). Sublimation and infrared spectral properties of ammonium cyanide. Icarus, 413, 116007. doi:10.1016/j.icarus.2024.116007

Report of the 6th (Virtual) Meeting on the Planetary Protection Knowledge Gaps for Human Missions to Mars on June 1–2, 2022

Spry, J. A., Siegel, B., Kminek, G., Baker, A., Beltran, E., Courtney, M., … Rettberg, P. (2024). Report of the 6th (Virtual) Meeting on the Planetary Protection Knowledge Gaps for Human Missions to Mars on June 1–2, 2022. Life Sciences in Space Research, 41, 158–165. doi:10.1016/j.lssr.2024.02.001

April 2024Moderate D/H ratios in methane ice on Eris and Makemake as evidence of hydrothermal or metamorphic processes in their interiors: Geochemical analysis

Glein, C. R., Grundy, W. M., Lunine, J. I., Wong, I., Protopapa, S., Pinilla-Alonso, N., … Souza-Feliciano, A. C. (2024). Moderate D/H ratios in methane ice on Eris and Makemake as evidence of hydrothermal or metamorphic processes in their interiors: Geochemical analysis. Icarus, 412, 115999. doi:10.1016/j.icarus.2024.115999

Fossil-calibrated molecular clock data enable reconstruction of steps leading to differentiated multicellularity and anisogamy in the Volvocine algae

Lindsey, C. R., Knoll, A. H., Herron, M. D., & Rosenzweig, F. (2024). Fossil-calibrated molecular clock data enable reconstruction of steps leading to differentiated multicellularity and anisogamy in the Volvocine algae. BMC Biology, 22(1), None. doi:10.1186/s12915-024-01878-1

Probing the Oxidation State of Ocean Worlds with SUDA: Fe (ii) and Fe (iii) in Ice Grains

Napoleoni, M., Hortal Sánchez, L., Khawaja, N., Abel, B., Glein, C. R., Hillier, J. K., & Postberg, F. (2024). Probing the Oxidation State of Ocean Worlds with SUDA: Fe (ii) and Fe (iii) in Ice Grains. The Planetary Science Journal, 5(4), 95. doi:10.3847/psj/ad2462

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