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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February 2020Extremely Long Convergence Times in a 3D GCM Simulation of the Sub-Neptune Gliese 1214b

Wang, H., & Wordsworth, R. (2020). Extremely Long Convergence Times in a 3D GCM Simulation of the Sub-Neptune Gliese 1214b. The Astrophysical Journal, 891(1), 7. doi:10.3847/1538-4357/ab6dcc

Duplication of leucyl-tRNA synthetase in an archaeal extremophile may play a role in adaptation to variable environmental conditions

Weitzel, C. S., Li, L., Zhang, C., Eilts, K. K., Bretz, N. M., Gatten, A. L., … Martinis, S. A. (2020). Duplication of leucyl-tRNA synthetase in an archaeal extremophile may play a role in adaptation to variable environmental conditions. Journal of Biological Chemistry, None, jbc.RA118.006481. doi:10.1074/jbc.ra118.006481

Olivine‐Carbonate Mineralogy of the Jezero Crater Region

Brown, A. J., Viviano, C. E., & Goudge, T. A. (2020). Olivine‐Carbonate Mineralogy of the Jezero Crater Region. Journal of Geophysical Research: Planets, 125(3), None. doi:10.1029/2019je006011

The solar wind from a stellar perspective. How do low-resolution data impact the determination of wind properties?

Boro Saikia, S., Jin, M., Johnstone, C. P., Lüftinger, T., Güdel, M., Airapetian, V. S., … Folsom, C. P. (2020). The solar wind from a stellar perspective. How do low-resolution data impact the determination of wind properties? Astronomy & Astrophysics. doi:10.1051/0004-6361/201937107

Possible H2O storage in the crystal structure of CaSiO3 perovskite

Chen, H., Leinenweber, K., Prakapenka, V., Prescher, C., Meng, Y., Bechtel, H., … Shim, S-H. (2020). Possible H2O storage in the crystal structure of CaSiO3 perovskite. Physics of the Earth and Planetary Interiors, 299, 106412. doi:10.1016/j.pepi.2019.106412

Chemical Diversity of Super-Earths As a Consequence of Formation

Scora, J., Valencia, D., Morbidelli, A., & Jacobson, S. (2020). Chemical Diversity of Super-Earths As a Consequence of Formation. Monthly Notices of the Royal Astronomical Society. doi:10.1093/mnras/staa568

January 2020Uranium Isotope Fractionation (238U/235U) during U(VI) Uptake by Freshwater Plankton

Chen, X., Zheng, W., Anbar, A.D. (2020). Uranium Isotope Fractionation (238U/235U) during U(VI) Uptake by Freshwater Plankton. Environmental Science and Technology. doi.org/10.1021/acs.est.9b06421

An RNA polymerase ribozyme that synthesizes its own ancestor

Tjhung, K. F., Shokhirev, M. N., Horning, D. P., & Joyce, G. F. (2020). An RNA polymerase ribozyme that synthesizes its own ancestor. Proceedings of the National Academy of Sciences, 117(6), 2906–2913. doi:10.1073/pnas.1914282117

First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager

Hom, J., Patience, J., Esposito, T. M., Duchêne, G., Worthen, K., Kalas, P., … Zuckerman, B. (2020). First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager. The Astronomical Journal, 159(1), 31. doi:10.3847/1538-3881/ab5af2

Magnesium isotopes of the bulk solar wind from Genesis diamond‐like carbon films

Jurewicz, A. J. G., Rieck, K. D., Hervig, R., Burnett, D. S., Wadhwa, M., Olinger, C. T., … Williams, P. (2020). Magnesium isotopes of the bulk solar wind from Genesis diamond‐like carbon films. Meteoritics & Planetary Science. doi:10.1111/maps.13439

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