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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June 2021Geochemistry and Cosmochemistry of potassium stable isotopes

Wang, K., Li, W., Li, S., Tian, Z., Koefoed, P., & Zheng, X-Y. (2021). Geochemistry and Cosmochemistry of potassium stable isotopes. Geochemistry, None, 125786. doi:10.1016/j.chemer.2021.125786

Draft Genome Sequence of Shewanella sp. Strain BF02_Schw, Isolated from Blood Falls, a Feature Where Subglacial Brine Discharges to the Surface of Taylor Glacier, Antarctica

Boles, B. W., Murdoch, R. W., Ohlsson, I., & Mikucki, J. A. (2021). Draft Genome Sequence of Shewanella sp. Strain BF02_Schw, Isolated from Blood Falls, a Feature Where Subglacial Brine Discharges to the Surface of Taylor Glacier, Antarctica. Microbiology Resource Announcements, 10(22), None. doi:10.1128/mra.01141-20

Stellar Winds Drive Strong Variations in Exoplanet Evaporative Outflow Patterns and Transit Absorption Signatures

Harbach, L. M., Moschou, S. P., Garraffo, C., Drake, J. J., Alvarado-Gómez, J. D., Cohen, O., & Fraschetti, F. (2021). Stellar Winds Drive Strong Variations in Exoplanet Evaporative Outflow Patterns and Transit Absorption Signatures. The Astrophysical Journal, 913(2), 130. doi:10.3847/1538-4357/abf63a

Potassium distribution and isotope composition in the lithospheric mantle in relation to global Earth’s reservoirs

Ionov, D. A., & Wang, K. (2021). Potassium distribution and isotope composition in the lithospheric mantle in relation to global Earth’s reservoirs. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2021.06.033

The chemical composition of impact craters on Titan

10.1051/0004-6361/202037866

The chemical composition of impact craters on Titan

10.1051/0004-6361/202037866

Seasonal hydrologic and geologic forcing drive hot spring geochemistry and microbial biodiversity

Colman, D. R., Lindsay, M. R., Harnish, A., Bilbrey, E. M., Amenabar, M. J., Selensky, M. J., … Boyd, E. S. (2021). Seasonal hydrologic and geologic forcing drive hot spring geochemistry and microbial biodiversity. Environmental Microbiology. doi:10.1111/1462-2920.15617

Evolution of Ephemeral Phosphate Minerals on Planetary Environments

Feng, T., Gull, M., Omran, A., Abbott-Lyon, H., & Pasek, M. A. (2021). Evolution of Ephemeral Phosphate Minerals on Planetary Environments. ACS Earth and Space Chemistry. doi:10.1021/acsearthspacechem.1c00007

Transcriptional response to prolonged perchlorate exposure in the methanogen Methanosarcina barkeri and implications for Martian habitability

Harris, R. L., Schuerger, A. C., Wang, W., Tamama, Y., Garvin, Z. K., & Onstott, T. C. (2021). Transcriptional response to prolonged perchlorate exposure in the methanogen Methanosarcina barkeri and implications for Martian habitability. Scientific Reports, 11(1), None. doi:10.1038/s41598-021-91882-0

EDEN: Flare Activity of the Nearby Exoplanet-hosting M Dwarf Wolf 359 Based on K2 and EDEN Light Curves

Lin, C-L., Chen, W-P., Ip, W-H., Apai, D., Bixel, A., Boyle, R., … Häberle, M. (2021). EDEN: Flare Activity of the Nearby Exoplanet-hosting M Dwarf Wolf 359 Based on K2 and EDEN Light Curves. The Astronomical Journal, 162(1), 11. doi:10.3847/1538-3881/abf933

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