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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September 2019Deciphering Biosignatures in Planetary Contexts

Chan, M. A., Hinman, N. W., Potter-McIntyre, S. L., Schubert, K. E., Gillams, R. J., Awramik, S. M., … Cleaves, H. J. (2019). Deciphering Biosignatures in Planetary Contexts. Astrobiology, 19(9), 1075–1102. doi:10.1089/ast.2018.1903

Prebiotic Phosphorylation of Uridine using Diamidophosphate in Aerosols

Castañeda, A. D., Li, Z., Joo, T., Benham, K., Burcar, B. T., Krishnamurthy, R., … Orlando, T. M. (2019). Prebiotic Phosphorylation of Uridine using Diamidophosphate in Aerosols. Scientific Reports, 9(1), None. doi:10.1038/s41598-019-49947-8

MINERALOGY, PETROLOGY, AND OXYGEN ISOTOPIC COMPOSITION OF NORTHWEST AFRICA 12379, METAL-RICH CHONDRITE WITH AFFINITY TO ORDINARY CHONDRITES

Jansen, C. A., Brenker, F. E., Zipfel, J., Pack, A., Labenne, L., Nagashima, K., … Schiller, M. (2019). MINERALOGY, PETROLOGY, AND OXYGEN ISOTOPIC COMPOSITION OF NORTHWEST AFRICA 12379, METAL-RICH CHONDRITE WITH AFFINITY TO ORDINARY CHONDRITES. Geochemistry. doi:10.1016/j.chemer.2019.125537

Demonstrating predictive wavefront control with the Keck II near-infrared pyramid wavefront sensor

Jensen-Clem, R., Bond, C. Z., Cetre, S., McEwen, E., Wizinowich, P., Ragland, S., … Graham, J. (2019). Demonstrating predictive wavefront control with the Keck II near-infrared pyramid wavefront sensor. Techniques and Instrumentation for Detection of Exoplanets IX. doi:10.1117/12.2529687

When Did Life Likely Emerge on Earth in an RNA‐First Process?

Benner, S. A., Bell, E. A., Biondi, E., Brasser, R., Carell, T., Kim, H., … Trail, D. (2019). When Did Life Likely Emerge on Earth in an RNA‐First Process? ChemSystemsChem. doi:10.1002/syst.201900035

Bright Southern Variable Stars in the bRing Survey

Mellon, S. N., Mamajek, E. E., Stuik, R., Zwintz, K., Kenworthy, M. A., J. Talens, G. J., … Ireland, M. J. (2019). Bright Southern Variable Stars in the bRing Survey. The Astrophysical Journal Supplement Series, 244(1), 15. doi:10.3847/1538-4365/ab3662

OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections

Nesvorný, D., Vokrouhlický, D., Stern, A. S., Davidsson, B., Bannister, M. T., Volk, K., … Alexandersen, M. (2019). OSSOS. XIX. Testing Early Solar System Dynamical Models Using OSSOS Centaur Detections. The Astronomical Journal, 158(3), 132. doi:10.3847/1538-3881/ab3651

The Impact of Stripped Cores on the Frequency of Earth-size Planets in the Habitable Zone

Pascucci, I., Mulders, G. D., & Lopez, E. (2019). The Impact of Stripped Cores on the Frequency of Earth-size Planets in the Habitable Zone. The Astrophysical Journal, 883(1), L15. doi:10.3847/2041-8213/ab3dac

An Exo–Kuiper Belt with an Extended Halo around HD 191089 in Scattered Light

Ren, B., Choquet, É., Perrin, M. D., Duchêne, G., Debes, J. H., Pueyo, L., … Norman, C. (2019). An Exo–Kuiper Belt with an Extended Halo around HD 191089 in Scattered Light. The Astrophysical Journal, 882(1), 64. doi:10.3847/1538-4357/ab3403

Uranium isotope evidence for limited euxinia in mid-Proterozoic oceans

Gilleaudeau, G. J., Romaniello, S. J., Luo, G., Kaufman, A. J., Zhang, F., Klaebe, R. M., … Anbar, A. D. (2019). Uranium isotope evidence for limited euxinia in mid-Proterozoic oceans. Earth and Planetary Science Letters, 521, 150–157. doi:10.1016/j.epsl.2019.06.012

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