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 2021Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment

Cavalazzi, B., Lemelle, L., Simionovici, A., Cady, S. L., Russell, M. J., Bailo, E., … Hofmann, A. (2021). Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment. Science Advances, 7(29), eabf3963. doi:10.1126/sciadv.abf3963

Dependencies of Mantle Shock Heating in Pairwise Accretion

Gabriel, T. S. J., & Allen-Sutter, H. (2021). Dependencies of Mantle Shock Heating in Pairwise Accretion. The Astrophysical Journal Letters, 915(2), L32. doi:10.3847/2041-8213/abffd1

Modeling global-scale mass flows on the Lagrangian satellites of Dione and Tethys

Umurhan, O. M., Howard, A. D., White, O. L., Schenk, P. M., & Moore, J. M. (2021). Modeling global-scale mass flows on the Lagrangian satellites of Dione and Tethys. Icarus, None, 114612. doi:10.1016/j.icarus.2021.114612

The Science Case for a Return to Enceladus

Cable, M. L., Porco, C., Glein, C. R., German, C. R., MacKenzie, S. M., Neveu, M., … Núñez, J. (2021). The Science Case for a Return to Enceladus. The Planetary Science Journal, 2(4), 132. doi:10.3847/psj/abfb7a

Microstructural features in carbonates from Antarctic micrometeorites: Effective tools for analyzing the evolution of small Solar System bodies

Dobrica, E., Ohtaki, K., & Engrand, C. (2021). Microstructural features in carbonates from Antarctic micrometeorites: Effective tools for analyzing the evolution of small Solar System bodies. Microscopy and Microanalysis, 27(S1), 2778–2781. doi:10.1017/s1431927621009740

Behavior of the Mo, Tl, and U isotope systems during differentiation in the Kilauea Iki lava lake

Gaschnig, R. M., Rader, S. T., Reinhard, C. T., Owens, J. D., Planavsky, N., Wang, X., … Helz, R. (2021). Behavior of the Mo, Tl, and U isotope systems during differentiation in the Kilauea Iki lava lake. Chemical Geology, 574, 120239. doi:10.1016/j.chemgeo.2021.120239

Aspartic acid racemization and repair in the survival and recovery of hyperthermophiles after prolonged starvation at high temperature

Liang, R., Robb, F. T., & Onstott, T. C. (2021). Aspartic acid racemization and repair in the survival and recovery of hyperthermophiles after prolonged starvation at high temperature. FEMS Microbiology Ecology. doi:10.1093/femsec/fiab112

Transmission Spectroscopy of the Earth–Sun System to Inform the Search for Extrasolar Life

Mayorga, L. C., Lustig-Yaeger, J., May, E. M., Sotzen, K. S., Gonzalez-Quiles, J., Kilpatrick, B. M., … Izenberg, N. R. (2021). Transmission Spectroscopy of the Earth–Sun System to Inform the Search for Extrasolar Life. The Planetary Science Journal, 2(4), 140. doi:10.3847/psj/ac0c85

Anoxic depositional overprinting of 238U/235U in calcite: When do carbonates tell black shale tales?

Chen, X., Romaniello, S. J., McCormick, M., Sherry, A., Havig, J. R., Zheng, W., & Anbar, A. D. (2021). Anoxic depositional overprinting of 238U/235U in calcite: When do carbonates tell black shale tales? Geology. doi:10.1130/g48949.1

Organic matter in carbonaceous chondrite lithologies of Almahata Sitta: Incorporation of previously unsampled carbonaceous chondrite lithologies into ureilitic regolith

Kebukawa, Y., Zolensky, M. E., Goodrich, C. A., Ito, M., Ogawa, N. O., Takano, Y., … Sandford, S. (2021). Organic matter in carbonaceous chondrite lithologies of Almahata Sitta: Incorporation of previously unsampled carbonaceous chondrite lithologies into ureilitic regolith. Meteoritics & Planetary Science, 56(7), 1311–1327. doi:10.1111/maps.13713

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