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 2019Frequency of Coronal Mass Ejection Impacts with Early Terrestrial Planets and Exoplanets around Active Solar-like Stars

Kay, C., Airapetian, V. S., Lüftinger, T., & Kochukhov, O. (2019). Frequency of Coronal Mass Ejection Impacts with Early Terrestrial Planets and Exoplanets around Active Solar-like Stars. The Astrophysical Journal, 886(2), L37. doi:10.3847/2041-8213/ab551f

A global geomorphologic map of Saturn’s moon Titan

Lopes, R. M. C., Malaska, M. J., Schoenfeld, A. M., Solomonidou, A., Birch, S. P. D., Florence, M., … Wall, S. D. (2019). A global geomorphologic map of Saturn’s moon Titan. Nature Astronomy. doi:10.1038/s41550-019-0917-6

Theoretical study of formate, tartrate, tartronate, and glycolate production from 6-carbon trioxylate intermediate in the citric acid cycle

Khan, M., Kar, S., Wang, J., & Leszczynski, J. (2019). Theoretical study of formate, tartrate, tartronate, and glycolate production from 6-carbon trioxylate intermediate in the citric acid cycle. Journal of Molecular Modeling, 25(12), None. doi:10.1007/s00894-019-4240-z

A measurement of water vapour amid a largely quiescent environment on Europa

Paganini, L., Villanueva, G. L., Roth, L., Mandell, A. M., Hurford, T. A., Retherford, K. D., & Mumma, M. J. (2019). A measurement of water vapour amid a largely quiescent environment on Europa. Nature Astronomy. doi:10.1038/s41550-019-0933-6

The Possible Astrometric Signature of a Planetary-mass Companion to the Nearby Young Star TW Piscis Austrini (Fomalhaut B): Constraints from Astrometry, Radial Velocities, and Direct Imaging

De Rosa, R. J., Esposito, T. M., Hirsch, L. A., Nielsen, E. L., Marley, M. S., Kalas, P., … Macintosh, B. (2019). The Possible Astrometric Signature of a Planetary-mass Companion to the Nearby Young Star TW Piscis Austrini (Fomalhaut B): Constraints from Astrometry, Radial Velocities, and Direct Imaging. The Astronomical Journal, 158(6), 225. doi:10.3847/1538-3881/ab4c9b

Extraterrestrial ribose and other sugars in primitive meteorites

Furukawa, Y., Chikaraishi, Y., Ohkouchi, N., Ogawa, N. O., Glavin, D. P., Dworkin, J. P., … Nakamura, T. (2019). Extraterrestrial ribose and other sugars in primitive meteorites. Proceedings of the National Academy of Sciences, 116(49), 24440–24445. doi:10.1073/pnas.1907169116

Habitable Zone Boundaries for Circumbinary Planets

Cukier, W., Kopparapu, R. k., Kane, S. R., Welsh, W., Wolf, E., Kostov, V., & Haqq-Misra, J. (2019). Habitable Zone Boundaries for Circumbinary Planets. Publications of the Astronomical Society of the Pacific, 131(1006), 124402. doi:10.1088/1538-3873/ab50cb

Lower Triassic carbonate δ238U record demonstrates expanded ocean anoxia during Smithian Thermal Maximum and improved ventilation during Smithian-Spathian boundary cooling event

Zhao, H., Algeo, T. J., Liu, Y., Chen, Z-Q., Hu, Z., Zhang, L., & Li, Z. (2019). Lower Triassic carbonate δ238U record demonstrates expanded ocean anoxia during Smithian Thermal Maximum and improved ventilation during Smithian-Spathian boundary cooling event. Palaeogeography, Palaeoclimatology, Palaeoecology, None, 109393. doi:10.1016/j.palaeo.2019.109393

Minimal biomass deposition in banded iron formations inferred from organic matter and clay relationships

Dodd, M. S., Papineau, D., Pirajno, F., Wan, Y., & Karhu, J. A. (2019). Minimal biomass deposition in banded iron formations inferred from organic matter and clay relationships. Nature Communications, 10(1), None. doi:10.1038/s41467-019-12975-z

The Onset of Evolutionary Stalling and the Limit on the Power of Natural Selection to Improve a Cellular Module

Venkataram, S., Monasky, R., Sikaroodi, S. H., Kryazhimskiy, S., & Kaçar, B. (2019). The Onset of Evolutionary Stalling and the Limit on the Power of Natural Selection to Improve a Cellular Module. None. doi:10.1101/850644

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