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 2019A 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

The Search for Chiral Asymmetry as a Potential Biosignature in our Solar System

Glavin, D. P., Burton, A. S., Elsila, J. E., Aponte, J. C., & Dworkin, J. P. (2019). The Search for Chiral Asymmetry as a Potential Biosignature in our Solar System. Chemical Reviews. doi:10.1021/acs.chemrev.9b00474

Different 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

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