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 2021Behavior 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

Investigation of the Origins of Comets as Revealed through Infrared High-resolution Spectroscopy I. Molecular Abundances

Lippi, M., Villanueva, G. L., Mumma, M. J., & Faggi, S. (2021). Investigation of the Origins of Comets as Revealed through Infrared High-resolution Spectroscopy I. Molecular Abundances. The Astronomical Journal, 162(2), 74. doi:10.3847/1538-3881/abfdb7

Exploring habitability with artificial hydrothermal vents

Sanchez, A. M. (2021). Exploring habitability with artificial hydrothermal vents. Nature Reviews Earth & Environment. doi:10.1038/s43017-021-00206-3

A Circumplanetary Disk around PDS70c

Benisty, M., Bae, J., Facchini, S., Keppler, M., Teague, R., Isella, A., … Zurlo, A. (2021). A Circumplanetary Disk around PDS70c. The Astrophysical Journal Letters, 916(1), L2. doi:10.3847/2041-8213/ac0f83

The Effect of a Strong Pressure Bump in the Sun’s Natal Disk: Terrestrial Planet Formation via Planetesimal Accretion Rather than Pebble Accretion

Izidoro, A., Bitsch, B., & Dasgupta, R. (2021). The Effect of a Strong Pressure Bump in the Sun’s Natal Disk: Terrestrial Planet Formation via Planetesimal Accretion Rather than Pebble Accretion. The Astrophysical Journal, 915(1), 62. doi:10.3847/1538-4357/abfe0b

June 2021Genomic and Phenotypic Characterization of Chloracidobacterium Isolates Provides Evidence for Multiple Species

Saini, M. K., Sebastian, A., Shirotori, Y., Soulier, N. T., Garcia Costas, A. M., Drautz-Moses, D. I., … Bryant, D. A. (2021). Genomic and Phenotypic Characterization of Chloracidobacterium Isolates Provides Evidence for Multiple Species. Frontiers in Microbiology, 12, None. doi:10.3389/fmicb.2021.704168

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