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 2019Different Is More: The Value of Finding an Inhabited Planet That Is Far from Earth2.0

Lenardic, A., & Seales, J. (2019). Different Is More: The Value of Finding an Inhabited Planet That Is Far from Earth2.0. Astrobiology, 19(11), 1398–1409. doi:10.1089/ast.2018.1833

Origin and abundances of H2O in the terrestrial planets, Moon, and asteroids

McCubbin, F. M., & Barnes, J. J. (2019). Origin and abundances of H2O in the terrestrial planets, Moon, and asteroids. Earth and Planetary Science Letters, 526, 115771. doi:10.1016/j.epsl.2019.115771

September 2019Deciphering Biosignatures in Planetary Contexts

Chan, M. A., Hinman, N. W., Potter-McIntyre, S. L., Schubert, K. E., Gillams, R. J., Awramik, S. M., … Cleaves, H. J. (2019). Deciphering Biosignatures in Planetary Contexts. Astrobiology, 19(9), 1075–1102. doi:10.1089/ast.2018.1903

August 2019Venus as a Laboratory for Exoplanetary Science

Kane, S. R., Arney, G., Crisp, D., Domagal‐Goldman, S., Glaze, L. S., Goldblatt, C., … Zahnle, K. J. (2019). Venus as a Laboratory for Exoplanetary Science. Journal of Geophysical Research: Planets, 124(8), 2015–2028. doi:10.1029/2019je005939

The formation of Jupiter’s diluted core by a giant impact

Liu, S-F., Hori, Y., Müller, S., Zheng, X., Helled, R., Lin, D., & Isella, A. (2019). The formation of Jupiter’s diluted core by a giant impact. Nature, 572(7769), 355–357. doi:10.1038/s41586-019-1470-2

Assessing the Intrinsic Uncertainty and Structural Stability of Planetary Models: 1. Parameterized Thermal‐Tectonic History Models

Seales, J., Lenardic, A., & Moore, W. B. (2019). Assessing the Intrinsic Uncertainty and Structural Stability of Planetary Models: 1. Parameterized Thermal‐Tectonic History Models. Journal of Geophysical Research: Planets, 124(8), 2213–2232. doi:10.1029/2019je005918

April 2019The influence of plate tectonic style on melt production and CO2 outgassing flux at mid-ocean ridges

Fuentes, J. J., Crowley, J. W., Dasgupta, R., & Mitrovica, J. X. (2019). The influence of plate tectonic style on melt production and CO2 outgassing flux at mid-ocean ridges. Earth and Planetary Science Letters, 511, 154–163. doi:10.1016/j.epsl.2019.01.020

The fate of nitrogen during core-mantle separation on Earth

Grewal, D. S., Dasgupta, R., Holmes, A. K., Costin, G., Li, Y., & Tsuno, K. (2019). The fate of nitrogen during core-mantle separation on Earth. Geochimica et Cosmochimica Acta, 251, 87–115. doi:10.1016/j.gca.2019.02.009

January 2019Nitrogen Content in the Earth's Outer Core

Bajgain, S. K., Mookherjee, M., Dasgupta, R., Ghosh, D. B., & Karki, B. B. (2019). Nitrogen Content in the Earth's Outer Core. Geophysical Research Letters, 46(1), 89–98. doi:10.1029/2018gl080555

Delivery of carbon, nitrogen, and sulfur to the silicate Earth by a giant impact

Grewal, D. S., Dasgupta, R., Sun, C., Tsuno, K., & Costin, G. (2019). Delivery of carbon, nitrogen, and sulfur to the silicate Earth by a giant impact. Science Advances, 5(1), None. doi:10.1126/sciadv.aau3669

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